Document:

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                                                                     Exhibit 4.4

            FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT

     THIS FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT (this
"Amendment") dated as of March 22, 2002, is entered into by and among ETHYL
CORPORATION, a Virginia corporation (the "Borrower"), the Subsidiary Guarantors
signatory hereto, the Banks signatory hereto and BANK OF AMERICA, N.A., as
Administrative Agent for he Banks (in such capacity, the "Administrative
Agent").

                                    RECITALS

          A. The Borrower, the Subsidiary Guarantors, the Banks and the
     Administrative Agent are party to that certain Amended and Restated
     Competitive Advance, Revolving Credit Facility and Term Loan Agreement
     dated as of November 14, 1997 (as amended by that certain First Amendment
     and Restatement of Amended and Restated Credit Agreement dated as of April
     10, 2001, that certain Second Amendment to Amended and Restated Credit
     Agreement dated as of December 3, 2001 and that certain Third Amendment
     to Amended and Restated Credit Agreement dated as of January 15, 2002,
     "the Existing Credit Agreement").

          B. The Credit Parties have requested that the Banks amend the Existing
     Credit Agreement as provided herein.

          C. The Banks have agreed to amend the Existing Credit Agreement on the
     terms and conditions hereinafter set forth.

          NOW, THEREFORE, in consideration of the agreements herein contained,
     the parties hereto hereby agree as follows:

                                     PART I

                                   DEFINITIONS

          SUBPART 1.1 Certain Definitions. Unless otherwise defined herein or
     the context otherwise requires, the following terms used in this Amendment,
     including its preamble and recitals, have the following meanings:

          "Amended Credit Agreement" means the Existing Credit Agreement as
     amended hereby.

          "Amendment No. 4 Effective Date" is defined in Part III.

          SUBPART 1.2 Other Definitions. Unless otherwise defined herein or the
     context otherwise requires, terms used in this Amendment, including its
     preamble and recitals, have the meanings provided in the Existing Credit
     Agreement.

<PAGE>

                                     PART II

                     AMENDMENTS TO EXISTING CREDIT AGREEMENT

         Effective on (and subject to the occurrence of) the Amendment No. 4
Effective Date, the Existing Credit Agreement is hereby amended in accordance
with this Part II.

         SUBPART 2.1 Amendment to Section 1.1. The following new definitions are
hereby added to Section 1.1 of the Existing Credit Agreement in the appropriate
alphabetical order and shall read as follows:

          "Airplane" means that certain airplane and related property described
     on Schedule 1.1(c) attached hereto.

          "Permitted Airplane Financing" means that certain nonrecourse loan
     (secured by the Airplane) in a principal amount satisfactory to the
     Required Lenders, provided that (i) no part of the principal amount of such
     loan shall have a maturity date earlier than six months following the
     Maturity Date and (ii) such loan contains terms and conditions satisfactory
     to the Required Banks.

          "Required New Term Loan Banks" shall mean a Bank or Banks (other than
     Defaulting Banks) holding in the aggregate at least 75% of the outstanding
     New Term Loan (and Participation Interests therein).

          "Required Revolving Banks" shall mean a Bank or Banks (other than
     Defaulting Banks) holding in the aggregate at least 75% of (i) the
     Revolving Commitments (and Participation Interests therein) or (ii) if all
     of the Revolving Commitments have been terminated, the outstanding
     Revolving Loans and LOC Obligations (and any Participation Interests in the
     Revolving Loans and LOC Obligations).

          "Required Term Loan Banks" shall mean a Bank or Banks (other than
     Defaulting Banks) holding in the aggregate at least 75% of the Outstanding
     Term Loan (and Participation Interests therein).

          "Unused Fee" shall have the meaning assigned to such term in Section
     3.5(a).

          "Unused Fee Calculation Period" shall have the meaning assigned to
     such term in Section 3.5(a).

          "Unused Revolving Committed Amount" means, for any period, the amount
     by which (a) the then applicable Revolving Committed Amount exceeds (b) the
     daily average sum for such period of (i) the outstanding aggregate
     principal amount of all Revolving Loans plus (ii) the outstanding aggregate
     principal amount of all LOC Obligations.

         SUBPART 2.2 Amendment to Section 1.1. The following definitions in
Section 1.1 of the Existing Credit Agreement are hereby amended and restated in
their entirety to read as follows:

                                       2

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          "Applicable Percentage" means, for purposes of calculating the
     applicable interest rate for any day for any Loan, the applicable rate of
     the Unused Fee for any day for purposes of Section 3.5(a), the applicable
     rate of the Standby Letter of Credit Fee for any day for purposes of
     Section 3.5(b)(i) or the applicable rate of the Trade Letter of Credit Fee
     for any day for purposes of Section 3.5(b)(ii), the appropriate applicable
     percentage corresponding to the Leverage Ratio in effect as of the most
     recent Calculation Date:
<TABLE>
<CAPTION>

                                                       Applicable Percentages
                          -----------------------------------------------------------------------------
Pricing    Leverage Ratio      For Revolving Loans,        For Standby     For Trade      For Unused
  Level                         Term  Loan and New          Letter of      Letter of          Fee
                                    Term Loan              Credit Fee     Credit Fee
                           ------------------------------
                              Eurodollar     Base Rate
                                Loans          Loans
-------------------------------------------------------------------------------------------------------
<c>
    I       (greater than)
              4.0 to 1.0       4.25%          3.25%           4.25%          2.25%           0.50%
-------------------------------------------------------------------------------------------------------
   II       (less than
              or equal to)
              4.0 to 1.0       3.75%          2.75%           3.75%          2.00%           0.50%

            but (greater than)
              3.5 to 1.0
-------------------------------------------------------------------------------------------------------
   III      (less than or
              equal to)
              3.5 to 1.0       3.50%          2.50%           3.50%          1.75%           0.50%
            but (greater than)
              3.0 to 1.0
-------------------------------------------------------------------------------------------------------
   IV       (less than or
              equal to)
              3.0 to 1.0       3.00%          2.00%           3.00%          1.50%           0.50%
-------------------------------------------------------------------------------------------------------
</TABLE>

     The Applicable Percentages shall be determined and adjusted quarterly on
     the date (each a "Calculation Date") five Business Days after the date by
     which the Credit Parties are required to provide the officer's certificate
     in accordance with the provisions of Section 7.1(d) for the most recently
     ended fiscal quarter of the Consolidated Parties; provided, however, if the
     Credit Parties fail to provide the officer's certificate to the Agency
     Service Address as required by Section 7.1(d) for the last day of the most
     recently ended fiscal quarter of the Consolidated Parties preceding the
     applicable Calculation Date, the Applicable Percentage from such
     Calculation Date shall be based on Pricing Level I until such time as an
     appropriate officer's certificate is provided, whereupon the Applicable
     Percentages shall be determined by the Leverage Ratio as of the last day of
     the most recently ended fiscal quarter of the Consolidated Parties
     preceding such Calculation Date. Each Applicable Percentage shall be
     effective from one Calculation Date until the next Calculation Date. Any
     adjustment in the Applicable Percentages shall be applicable to all
     existing Loans and Letters of Credit as well as any new Loans and Letters
     of Credit made or issued.

          "Consolidated EBITDA" means, as of any date for the four fiscal
     quarter period ending on such date with respect to the Consolidated Parties
     on a consolidated basis, the sum of (i) Consolidated Net Income, plus (ii)
     an amount which, in the determination of Consolidated Net Income, has been
     deducted for (A) interest expense, (B) total Federal, state, local and
     foreign income taxes and (C) depreciation and amortization expense, all as
     determined in accordance with GAAP plus (iii) for the fiscal quarters
     ending March 31, 2001 and June 30, 2001, non-recurring charges (to the
     extent charged during such applicable fiscal

                                       3

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     quarter) associated with the corporate restructuring of the Consolidated
     Parties plus (iv) the excise taxes and expenses related to the termination
     of the Ethyl Corporation Pension Plan to the extent not included in the
     subclauses (ii) and (iii) above plus (v) all non-cash charges recorded in
     such period associated with the requirements of Statement of Financial
     Accounting Standards No. 87 and No. 88, as amended plus (vi)(a) the amount
     of fees and expenses of Ernst & Young Corporate Finance LLC (in its
     capacity as consultant to the Banks) paid by the Borrower during such
     period, (b) the amount of fees and expenses of the financial advisor to the
     Borrower retained pursuant to the terms of the Second Amendment to Amended
     and Restated Credit Agreement paid by the Borrower during such period, (c)
     the amount of fees and expenses of the financial advisor to the Borrower
     retained pursuant to the terms of the Fourth Amendment to Amended and
     Restated Credit Agreement paid during such period and (d) the amount of
     appraisal costs related to the appraisals provided pursuant to Sections
     7.18 and 7.19 hereof paid by the Borrower during such period plus (vii) the
     amount of fees paid to the Banks in connection with the Fourth Amendment to
     Amended and Restated Credit Agreement during such period plus (viii) all
     non-cash charges related to intangible assets and/or equity securities made
     during such period minus (ix) all non-cash income recorded in such period
     associated with the requirements of Statement of Financial Accounting
     Standards No. 87 and 88, as amended minus (x) (a) all non-recurring income
     items during such period (included in Consolidated Net Income for such
     period) in excess of $500,000 and (b) to the extent not deducted in
     subclause (a) above, all non-recurring income items during such period
     (included in Consolidated Net Income) which in the aggregate exceed
     $1,000,000 minus (xi) any gain related to the write-up of equity securities
     made during such period; provided, that Consolidated EBITDA for any fiscal
     period ending on or before December 31, 2000 which is defined in Schedule
     1.1(a) shall be deemed to equal the amount set forth on Schedule 1.1(a)
     opposite such period.

          "Debt Issuance Prepayment Event" means the receipt by any Consolidated
     Party of proceeds from any Debt Issuance other than an Excluded Debt
     Issuance.

          "Excess Cash Flow" means, with respect to any fiscal year period of
     the Consolidated Parties on a consolidated basis, an amount equal to (a)
     Consolidated EBITDA minus (b) Consolidated Capital Expenditures minus (c)
     Consolidated Interest Expense minus (d) Federal, state and other income
     taxes payable in respect of such period by the Consolidated Parties on a
     consolidated basis minus (e) Consolidated Scheduled Funded Debt Payments
     minus (f) the amount of any voluntary prepayments of the Term Loan, the New
     Term Loan or (to the extent accompanied by a permanent reduction in the
     Revolving Committed Amount) the Revolving Loans minus (g) the amount of
     cash payments made with respect to the corporate restructuring charges of
     the Consolidated Parties during such fiscal year period minus (h) cash
     payments made with respect to accrued expenses recorded in earlier periods
     to the extent not included in changes in Consolidated Working Capital
     identified below) minus (i) increases in Consolidated Working Capital plus
     (j) decreases in Consolidated Working Capital with all working capital
     changes for both (i) and (j) excluding the effects of foreign exchange.

          "Extension Date" means March 1, 2003.

                                       4

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          "Interest Payment Date" means (a) as to Base Rate Loans, the last
     Business Day of each calendar month, the date of repayment of principal of
     such Loan and the Maturity Date, and (b) as to Eurodollar Loans, the last
     day of each applicable Interest Period, the date of repayment of principal
     of such Loan and the Maturity Date, and in addition where the applicable
     Interest Period for a Eurodollar Loan is greater than one month, then also
     the date one month from the beginning of the Interest Period and each month
     thereafter.

          "Maturity Date" means March 31, 2003, as such date may be extended
     pursuant to Section 2.5.

          "Net Cash Proceeds" means (i) with respect to any Asset Disposition,
     Equity Issuance, Debt Issuance or Involuntary Disposition, the aggregate
     proceeds paid in cash or Cash Equivalents received by any Consolidated
     Party in respect of such Asset Disposition, Equity Issuance, Debt Issuance
     or Involuntary Disposition, net of (a) reasonable direct costs (including,
     without limitation, legal, accounting and investment banking fees, and
     sales commissions) (b) taxes paid or payable as a result thereof and (c) in
     the case of any Asset Disposition, the amount necessary to retire any
     Indebtedness secured by a Permitted Lien (ranking senior to any Lien of the
     Administrative Agent) on the related Property; it being understood that
     "Net Cash Proceeds" shall include, without limitation, any cash or Cash
     Equivalents received upon the sale or other disposition of any non-cash
     consideration received by any such Consolidated Party in any Asset
     Disposition, Equity Issuance, Debt Issuance or Involuntary Disposition, and
     (ii) with respect to the Ethyl Corporation Pension Plan, the aggregate
     reversion realized by the Borrower in connection with the termination of
     such plan under a standard termination pursuant to Section 4041(b) of ERISA
     and the standard termination notice filed by the Borrower with the PBGC on
     March 30, 2001, net of amounts required to (a) pay all income and excise
     taxes assessed against the reversion, (b) transfer to a replacement pension
     plan the minimum amount necessary to cause such replacement plan to
     constitute a "qualified replacement plan" (as such term is defined in
     Section 4980(d)(2) of the Code) and (c) pay other expenses incurred in
     connection with such termination.

         SUBPART 2.3 Amendment to Section 1.1. The definitions of "B
Collateral", "Facility Fee", "Noteholders", "Qualified Asset-Based Financing",
"Qualified Lease Financing", Qualified Secured Financing", "Release of
Collateral Event", "Research and Development Facility", "Senior Note" and
"Senior Note Indenture" in Section 1.1 of the Existing Credit Agreement are each
hereby deleted in their entirety.

         SUBPART 2.4 Amendment to 2.1(a). The first proviso in Section 2.1(a) of
the Existing Credit Agreement is hereby amended and restated in its entirety to
read as follows:

          provided, however, that the sum of the aggregate outstanding principal
     amount of Revolving Loans shall not exceed ONE HUNDRED FORTY SIX MILLION
     DOLLARS ($146,000,000) (as such aggregate maximum amount may be reduced
     from time to time as provided in Section 3.3 and Section 3.4, the Revolving
     Committed Amount");

                                       5

<PAGE>

         SUBPART 2.5 Amendment to Section 2.2(a). Section 2.2(a) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (a) Issuance. Subject to the terms and conditions hereof and in
     reliance upon the agreements of the other Banks set forth in Section 2.2(c)
     and the representations and warranties set forth herein, the Issuing Lender
     agrees to issue, and each Bank severally agrees to participate in the
     issuance by the Issuing Lender of, standby and trade Letter of Credit in
     Dollars from time to time from the Closing Date until the date fifteen (15)
     days prior to the Maturity Date as the Borrower may request, in a form
     acceptable to the Issuing Lender; provided, however, that (i) the LOC
     Obligations outstanding shall not at any time exceed FIFTY FIVE MILLION
     DOLLARS ($55,000,000) (as such aggregate maximum amount may be reduced from
     time to time as provided in Section 3.3 and 3.4, the "LOC Committed
     Amount") and (ii) the sum of the aggregate outstanding principal amount of
     Revolving Loans plus LOC Obligations shall not at any time exceed the
     Revolving Committed Amount. No Letter of Credit shall (x) have an original
     expiry date more than one year from the date of issuance (provided that any
     such Letter of Credit may contain customary "evergreen" provisions pursuant
     to which the expiry date is automatically extended by a specific time
     period not to exceed one year from the applicable expiry date unless the
     Issuing Lender gives notice to the beneficiary of such Letter of Credit at
     least a specified time period prior to the expiry date then in effect) or
     (y) as originally issued, have an expiry date extending beyond the date
     fifteen (15) days prior to the Maturity Date. If any Letter of Credit is
     extended beyond the Maturity Date pursuant to customary "evergreen"
     provisions as provided above, the Borrower shall, on the Maturity Date,
     either (i) cause such Letter of Credit to be surrendered to the Issuing
     Lender or (ii) provide cash collateral to the Issuing Lender in an amount
     equal to at least 105% of the maximum amount available to be drawn under
     such Letter of Credit. Each Letter of Credit shall comply with the related
     LOC Documents. The issuance and expiry dates of each Letter of Credit shall
     be a Business Day.

         SUBPART 2.6 Amendment to Section 2.3(a). The second sentence of Section
2.3(a) of the Existing Credit Agreement is hereby amended and restated in its
entirety to read as follows:

          As of March 26, 2002, the aggregate outstanding amount of the Term
     Loan is FORTY FOUR MILLION SEVEN HUNDRED SEVENTY THREE THOUSAND NINE
     HUNDRED SIXTY EIGHT DOLLARS ($44,773,968).

         SUBPART 2.7 Amendment to Section 2.3(c). Section 2.3(c) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (c) Repayment of Term Loan. The principal amount of the Term Loan
     shall be repaid in the amounts and on the dates set forth below, unless
     accelerated sooner pursuant to Section 9.2.

                                       6

<PAGE>

               May 31, 2002                                $5,000,000
               August 31, 2002                             $10,000,000
               September 30, 2002                          $5,000,000
               November 30, 2002                           $10,000,000
               February 28, 2003                           $10,000,000
               March 31, 2003                              $4,773,968

         SUBPART 2.8 Amendment to Section 2.4(c). Section 2.4(c) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (c) Repayment of New Term Loan. As of March 26, 2002, the aggregate
     outstanding amount of the New Term Loan is TWO HUNDRED FIVE MILLION SIX
     HUNDRED NINETY THOUSAND EIGHT HUNDRED TWELVE DOLLARS ($205,690,812). The
     principal amount of the New Term Loan shall be repaid in full on the
     Maturity Date, unless accelerated sooner pursuant to Section 9.2; provided,
     however, that if the Maturity Date is extended pursuant to Section 2.5, the
     principal amount of the New Term Loan outstanding on the Extension Date
     shall be repaid in installments of $10 million on May 31, 2003, August 31,
     2003, November 30, 2003 and February 28, 2004, with the balance payable on
     the Maturity Date, as may be executed pursuant to Section 2.5.

         SUBPART 2.9 Amendment to Section 2.5. Section 2.5 of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          2.5 Extension of Maturity Date.

         The Maturity Date shall be extended to March 31, 2004 if the following
conditions are satisfied:

          (a) The Borrower shall have made payments on the Loans and/or
     permanently reduced the Revolving Committed Amount such that the aggregate
     outstanding amount of the term loan plus the New Term Loan plus the
     Revolving Committed Amount shall be less than or equal to $323,500,000 on
     or before the Extension Date;

          (b) The amount of availability existing under the Revolving Committed
     Amount shall not be less than $15,000,000 on the Extension Date;

          (c) The Borrower shall have paid to the Administrative Agent, for the
     account of each Bank, an extension fee equal to 0.50% of such Bank's
     Commitment as of the Extension Date; and

          (d) The Borrower shall have delivered a certification (as of the
     Extension Date) to the Administrative Agent stating that the representation
     and warranties set forth in Section 6 are true and correct in all material
     respects as of such date (except for those which expressly relate
     to an earlier date).

                                       7

<PAGE>

         SUBPART 2.10 Amendment to Section 3.3(a). The first two sentences of
Section 3.3(a) of the Existing Credit Agreement are hereby amended and restated
in their entirety to read as follows:

         The Borrower shall have the right to repay Loans in whole or in part
from time to time; provided, however, that (i) each partial repayment of Loans
shall be in a minimum principal amount of $1,000,000 and integral multiples of
$100,000 in excess thereof (or the then remaining principal balance of the
Revolving Loans, the Term Loan or the New Term Loan, as applicable, if less) and
(ii) any prepayment of the Loans (other than the Revolving Loans) shall be
applied first to the installment of principal of the Term Loan due on March 31,
2003 (unless such installment payment has already been prepaid pursuant to
Section 3.3(b)) and second to the principal amount of the New Term Loan due on
the Maturity Date (and if the Maturity Date has been extended pursuant to
Section 2.5, to the remaining principal installments of the New Term Loan in the
inverse order of maturity thereof). Subject to the foregoing terms, amounts
prepaid under this Section 3.3(a) shall be applied as the Borrower may elect;
provided that if the Borrower shall fail to specify with respect to any
voluntary prepayment, such voluntary prepayment shall be applied first to
Revolving Loans and then to the Term Loan and the New Term Loan (to be applied
in the manner set forth above), in each case first to Base Rate Loans and then
to Eurodollar Loans in direct order in Interest Period maturities.

         SUBPART 2.11 Amendment to Section 3.3(b)(ii). Section 3.3(b)(ii) of the
Existing Credit Agreement is hereby amended and restated in its entirety to read
as follows:

                  (ii) Excess Cash Flow. (A) Within 90 days after the end of the
fiscal year ending December 31, 2001, the Borrower shall prepay the Loans in an
amount equal to 90% of Excess Cash Flow for such fiscal year (such prepayment to
be applied as set forth in clause (vii) below). (B) Within 45 days after the end
of the eleven month period ending November 30, 2002, the Borrower shall prepay
the loans in an amount equal to 90% of Excess Cash Flow for such eleven month
period (such prepayment to be applied as set forth in clause (vii) below). (C)
If the Maturity Date is extended to March 31, 2004 pursuant to the terms of
Section 2.5, within 45 days after the end of each six month period ending May
31, 2003 and November 30, 2003, the Borrower shall prepay the Loans in an amount
equal to 90% of Excess Cash Flow for the applicable six month period ending as
of each such date (such prepayment to be applied as set forth in clause (vii)
below).

         SUBPART 2.11 Amendment to Section 3.3(b)(iii). A new subclause (C) is
hereby added to Section 3.3(b)(iii) of the Existing Credit Agreement and shall
read as follows:

(C)               Permitted Airplane Financing. Immediately upon the
                  consummation of the Permitted Airplane Financing, the Borrower
                  shall prepay the Loans in an aggregate amount equal to 100% of
                  the proceeds received from such Permitted Airplane Financing
                  (such prepayment to be applied as set forth in clause (vii)
                  below).

                                       8

<PAGE>

     SUBPART 2.13 Amendment to Section 3.3(b)(vii). The first sentence of
Section 3.3(b)(vii) of the Existing Credit Agreement is hereby amended and
restated in its entirety to read as follows:

          All amounts required to be paid pursuant to this Section 3.3(b) shall
     be applied as follows: (A) with respect to all amounts prepaid pursuant to
     Section 3.3(b)(i)(A), to Revolving Loans and (after all Revolving Loans
     have been repaid) to cash collateral account in respect of LOC Obligations,
     (B) with respect to all amounts prepaid pursuant to Section 3.3(b)(i)(B),
     to cash collateral account in respect of LOC Obligations, (C) with respect
     to all amounts prepaid pursuant to Section 3.3(b)(ii), (iv), (v) or (vi),
     first to the installment of principal of the Term Loan due on the Maturity
     Date (unless such installment payment has already been prepaid pursuant to
     Section 3.3(a) or (b)), second to the principal amount of the New Term Loan
     due on the Maturity Date (and if the Maturity Date has been extended
     pursuant to Section 2.5, to the remaining principal installments of the New
     Term Loan in the inverse order of maturity thereof), third to the Revolving
     Loans (with a corresponding permanent reduction of the Revolving Committed
     Amount) and fourth after all Revolving Loans have been paid, to a cash
     collateral account in respect of LOC Obligations (with a corresponding
     permanent reduction of the Revolving Committed Amount and the LOC Committed
     Amount) and (D) with respect to all amounts prepaid pursuant to Section
     3.3(b)(iii): (i) with respect to any amounts received on or before
     September 30, 2002, the first $5,000,000 of such amounts shall be applied
     to the installment of principal of the Term Loan due on September 30, 2002,
     with all such amounts in excess of $5,000,000 received on or before
     September 30, 2002 to be applied first to the installment of principal of
     the Term Loan due on the Maturity Date (unless such installment payment has
     already been prepaid pursuant to Section 3.3(a) or (b)), second to the
     principal amount of the New Term Loan due to the Maturity Date (and if the
     Maturity Date has been extended pursuant to Section 2.5, to the remaining
     principal installments of the New Term Loan in the inverse order of
     maturity thereof), third to the Revolving Loans (with a corresponding
     permanent reduction of the Revolving Committed Amount) and fourth after all
     Revolving Loans have been paid, to a cash collateral account in respect of
     LOC Obligations (with a corresponding permanent reduction in the Revolving
     Committed Amount and the LOC Committed Amount) and (ii) with respect to any
     amounts received after September 30, 2002, first to the installment of
     principal of the Term Loan due on the Maturity Date (unless such
     installment payment has already been prepaid pursuant to Section 3.3(a) or
     (b)), second to the principal amount of the New Term Loan due on the
     Maturity Date (and if the Maturity Date has been extended pursuant to
     Section 2.5, to the remaining principal installments of the New Term Loan
     in the inverse order of maturity thereof), third to the Revolving Loans
     (with a corresponding permanent reduction of the Revolving Committed
     Amount) and fourth after all Revolving Loans have been paid, to a cash
     collateral account in respect of LOC Obligations (with a corresponding
     permanent reduction in the Revolving Committed Amount and the LOC Committed
     Amount).

     SUBPART 2.14 Amendment to Section 3.4(d). Section 3.4(d) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

                                       9

<PAGE>

          (d) Mandatory Reductions. The Revolving Committed Amount and the LOC
     Committed Amount automatically shall be permanently reduced from time to
     time in accordance with the provisions of Section 3.3(b)(vii). The
     Revolving Committed Amount and the LOC Committed Amount shall also
     automatically be permanently reduced by an amount equal to any reduction in
     the amount available to be drawn under those certain Letters of Credit
     required in connection with (i) self-insurance obligations of the Borrower
     or any other Consolidated Party and (ii) environmental cleanup obligations
     of the Borrower or any other Credit Party in the States of Louisiana and
     Texas.

     SUBPART 2.15 Amendment to Section 3.5(a). Section 3.5(a) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (a) Unused Fee. In consideration of the Revolving Commitments of the
     Banks hereunder, the Borrower promises to pay to the Administrative Agent
     for the account of each Bank a fee (the "Unused Fee") on the Unused
     Revolving Committed Amount computed at a per annum rate for each day during
     the applicable Unused Fee Calculation Period (hereinafter defined) at a
     rate equal to the Applicable Percentage in effect from time to time. The
     Unused Fee shall commence to accrue on March 26, 2002 and shall be due and
     payable in arrears on the last Business Day of each March, June, September
     and December (and on any date that the Revolving Committed Amount is
     reduced and on the Maturity Date) for the immediately preceding quarter (or
     portion thereof) (each such quarter or portion thereof for which the Unused
     Fee is payable hereunder being herein referred to as an "Unused Fee
     Calculation Period"), beginning with the first of such dates to occur after
     March 26, 2002.

     SUBPART 2.16 Amendment to Section 3.5(d). Section 3.5(d) of the Existing
Credit Agreement is hereby deleted in its entirety.

     SUBPART 2.17 Amendment to Section 3.13(a). The reference to "Facility Fees"
in Section 3.13(a) of the Existing Credit Agreement is hereby replaced with a
reference to "Unused Fees".

     SUBPART 2.18 Amendment to Section 7.1(e). The parenthetical in Section
7.1(e) of the Existing Credit Agreement is hereby amended and restated in its
entirety to read "(presented on a monthly basis)".

     SUB PART 2.19 Amendment to Section 7.1(j). Section 7.1(j) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (j) Notices. Upon any Executive Officer of a Credit Party obtaining
     knowledge thereof, the Credit Parties will give written notice to the
     Administrative Agent immediately of (i) the occurrence of an event or
     condition consisting of a Default or Event of Default, specifying the
     nature and existence thereof and what action the Credit Parties have taken
     or propose to take with respect thereto, (ii) the occurrence of any of the
     following with respect to any Consolidated Party (A) the pendency or

                                       10

<PAGE>

     commencement of any litigation, arbitral or governmental proceeding against
     such Person which if adversely determined reasonably could be expected to
     have a Material Adverse Effect or (B) the institution of any proceedings
     against such Person with respect to, or receipt of notice by such Person of
     potential liability or responsibility for violation, or alleged violation
     of any Federal, state or local law, rule or regulation, including but not
     limited to, Environmental laws, the violation of which could reasonably be
     expected to have a Material Adverse Effect and (iii) any reduction in the
     self-insurance obligations of the Borrower or any other Consolidated Party.

     SUBPART 2.20 Amendment to Section 7.1(l). The following sentence is hereby
added at the end of Section 7.1(l) of the Existing Credit Agreement and shall
read as follows:

          Furthermore, promptly upon receipt of any written notice, written
     report or other written information received by any Consolidated Party
     related to the environmental cleanup obligations of the Consolidated
     Parties in the States of Louisiana and Texas (including, without
     limitation, any written information related to the amount of letters of
     credit required to be provided in connection with such environmental
     cleanup obligations), the Borrower will furnish, or cause to be furnished,
     to the Administrative Agent and each of the Banks a copy of such written
     notice, written report or other written information.

     SUBPART 2.21 Amendment to Section 7.1(o). Section 7.1(o) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (o) Cash Flow Forecasts. As soon as available, and in any event within
     three (3) Business Days after the close of each calendar week, commencing
     with the calendar week ending March 30, 2002 (i) a rolling thirteen week
     cash flow forecast of the Credit Parties (the "Cash Flow Forecast") for the
     thirteen weeks immediately succeeding the week which has most recently
     ended, each such forecast to be in form satisfactory to the Administrative
     Agent and (ii) a reconciliation of actual cash receipts and disbursements
     for the calendar week which has most recently ended against projected cash
     receipts and disbursements for such calendar week contained in the Cash
     Flow Forecast furnished to the Banks pursuant to this Section 7.1(o) during
     the preceding week, such reconciliation to be in a form satisfactory to the
     Administrative Agent.

     SUBPART 2.22 New Section 7.1(p). A new subclause (p) is hereby added to
Section 7.1 of the Existing Credit Agreement and shall read as follows:

          (p) Engine Oil. As soon as available, and in any event within 30 days
     after the close of each calendar month, commencing with the calendar month
     ending March 31, 2002, a cash flow report of the business referred to as
     the engine oil business or crankcase business for the calendar month most
     recently ended, each such report to be in a form satisfactory to the
     Administrative Agent.

     SUBPART 2.23 Amendment to Section 7.11. Section 7.11 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as follows:

                                       11

<PAGE>

     7.11 Financial Covenants.

     (a) Leverage Ratio. The Leverage Ratio, as of the last day of each fiscal
quarter of the Consolidated Parties occurring during each of the periods set
forth below, shall be less than or equal to:

Period                                              Ratio
------                                              -----

From October 1, 2001 through December 31, 2001    4.85 to 1.0

From January 1, 2002 through June 30, 2002        4.75 to 1.0

From July 1, 2002 through September 30, 2002      4.5  to 1.0

From October 1, 2002 through December 31, 2002    4.25 to 1.0

From January 1, 2003 and thereafter               3.75 to 1.0

and, if the Maturity Date is extended pursuant to the terms of Section 2.5, the
Leverage Ratio, as of the last day of each fiscal quarter of the Consolidated
Parties occurring during each of the periods set forth below, shall be less than
or equal to:

Period                                              Ratio
------                                              -----

From March 31, 2003 through June 30, 2003        3.75 to 1.0

From July 1, 2003 and thereafter                 3.5  to 1.0

     (b) Interest Coverage Ratio. The Interest Coverage Ratio, as of the last
day of each fiscal quarter of the Consolidated Parties occurring during each of
the periods set forth below, shall be greater than or equal to:

Period                                              Ratio
------                                              -----

From October 1, 2001 through December 31, 2001   2.25 to 1.0

From January 1, 2002 through March 31, 2002      2.5  to 1.0

From April 1, 2002 through June 30, 2002         2.75 to 1.0

From July 1, 2002 through December 31, 2002      3.25 to 1.0

From January 1, 2003 and thereafter              3.50 to 1.0

                                       12

<PAGE>

and, if the Maturity Date is extended pursuant to the terms of Section 2.5, the
Interest Coverage Ratio, as of the last day of each fiscal quarter of the
Consolidated Parties occurring during each of the periods set forth below, shall
be greater than or equal to:

Period                                             Ratio
------                                             -----

From March 31, 2003 and thereafter               3.50 to 1.0

          (c) Consolidated EBITDA. Consolidated EBITDA for each period of the
     Consolidated Parties shall not be less than (i) $76.5 million for the
     twelve month period ending December 31, 2001 and (ii) $85 million for each
     twelve month period ending as of each fiscal quarter end thereafter, and if
     the Maturity Date is extended pursuant to the terms of Section 2.5,
     Consolidated EBITDA for each period of the Consolidated Parties shall not
     be less than (iii) $85 million for each twelve month period ending March
     31, 2003 and June 30, 2003 and (iv) subsequent to June 30, 2003, $90
     million for each twelve month period ending as of each fiscal quarter end
     thereafter.

     SUBPART 2.24 Amendment to Section 7.12. The words "unless the Release of
Collateral Event has occurred" are hereby deleted in their entirety from each of
subclauses (a), (b) and (c) of Section 7.12 of the Existing Credit Agreement.

     SUBPART 2.25 Amendment to Section 7.13. The words "unless the Release of
Collateral Event has occurred" are hereby deleted in their entirety from both
sentences of Section 7.13 of the Existing Credit Agreement.

     SUBPART 2.26 Amendment to Section 7.14. Section 7.14 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as follows:

     7.14 Financial Advisor.

     The Borrower shall on or before May 30, 2002 retain a financial advisor to
assist the Borrower in the evaluation of financing options and the development
of alternative sources of refinancing. The Borrower agrees that it will cause
such financial advisor to meet with the Administrative Agent and the Banks upon
the request of the Required banks; provided, that the Borrower shall have
received notice of such meeting at least ten Business Days prior to the date of
such meeting. Such meeting may, at the election of the Administrative Agent,
take place via teleconference or video conference. Furthermore, the Borrower
shall continue to retain PricewaterhouseCoopers LLP as a financial advisor to
the Borrower in the capacity described in the certain engagement letter between
the Borrower and PricewaterhouseCoopers LLP dated November 29, 2001.

     SUBPART 2.27 Amendment to Section 7.18. The following new paragraph is
hereby added at the end of Section 7.18 of the Existing Credit Agreement and
shall read as follows:

     The Credit parties shall also provide the Administrative Agent with written
appraisals of the assets of the Consolidated Parties identified in subpart B of

                                       13

<PAGE>

Schedule 7.18 attached hereto on or before the applicable date identified for
each such asset in subpart B of Schedule 7.18. Such appraisals shall be in form
and substance satisfactory to the Required Banks.

     SUBPART 2.28 Amendment to Section 8.1. Sections 8.1(g) and (h) of the
Existing Credit Agreement are each hereby amended and restated in their entirety
to read as follows:

          (g) Permitted Airplane Financing; provided, that one hundred percent
     (100%) of the proceeds received therefrom are applied to the prepayment of
     the Loans in accordance with Section 3.3(b)(iii)(C);

          (h) [Reserved];

     SUBPART 2.29 Amendment to Section 8.2. Sections 8.2(o), (p) and (q) of the
Existing Credit Agreement are each hereby amended and restated in their entirety
to read as follows:

          (o) Liens on the Airplane to secure the Permitted Airplane Financing;

          (p) [Reserved];

          (q) [Reserved];

     SUBPART 2.30 Amendment to Section 8.2. Section 8.2(s) of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

          (s) Leins on cash in an amount not to exceed $325,000 in favor of one
     of the Banks to secure the credit card program provided by such Bank and
     described on Schedule 8.1; and

     SUBPART 2.31 Amendment to Section 8.6. Section 8.6 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as follows:

     8.6 Restricted Payments.

     The Credit Parties will not permit any Consolidated Party to, directly or
indirectly, declare, order, make or set apart any sum for or pay any Restricted
Payment, except (a) to make dividends or other distributions payable to any
Credit Party (directly or indirectly through Subsidiaries), (b) as permitted by
Section 8.5, Section 8.7 or Section 8.8 and (c) if the Borrower decides to carry
out a reverse stock split, the Borrower may repurchase fractional shares of its
Capital Stock in an amount not to exceed $100,000 in the aggregate in connection
with such reverse stock split, provided, that no Default or Event of Default
exists immediately prior to or immediately after giving effect to any such
repurchase.

     SUBPART 2.32 Amendment to Section 8.7. Section 8.7 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as follows:

                                       14

<PAGE>

     8.7 Other Indebtedness.

     The Credit Parties will not permit any Consolidated Party to (i) after the
issuance thereof, amend or modify any of the terms of any indebtedness of such
Consolidated Party if such amendment or modification would add or change any
terms in a manner adverse to such Consolidated Party, or shorten the final
maturity or average life to maturity or require any payment to be made sooner
than originally scheduled or increase the interest rate applicable thereto, or
(ii) make (or give any notice with respect thereto) any voluntary or optional
payment or prepayment or redemption or acquisition for value of (including
without limitation, by way of depositing money or securities with the trustee
with respect thereto before due for the purpose of paying when due), refund,
refinance or exchange of any other Indebtedness of such Consolidated Party
(other than any prepayment by any Consolidated Party of any Indebtedness owing
to a Credit Party). Neither the Richmond Campus Loan, nor the Permitted Airplane
Financing shall be amended or modified without the prior written consent of the
Required Banks.

     SUBPART 2.33 Amendment to Section 8.10. Section 8.10 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as follows:

     8.10 Limitation on Restricted Actions.

     The Credit Parties will not permit any Consolidated Party to, directly or
indirectly, create or otherwise cause or suffer to exist or become effective any
encumbrance or restriction on the ability of any such Person to (a) pay
dividends or make any other distributions to any Credit Party on its Capital
Stock or with respect to any other interest or participation in, or measured by,
its profits, (b) pay any Indebtedness or other obligation owed to any Credit
Party, (c) make loans or advances to any Credit Party, (d) sell, lease or
transfer any of its properties or assets to any Credit Party, or (e) act as a
Credit Party and pledge its assets pursuant to the Credit Documents or any
renewals, refinancings, exchanges, refudings or extension thereof, except (in
respect of any of the matters referred to in clauses (a) through (d) above) for
such encumbrances or restrictions existing under or by reason of (i) this Credit
Agreement and the other Credit Documents, (ii) applicable law, (iii) any
document or instrument governing Indebtedness incurred pursuant to Section
8.1(c), provided that any such restriction contained therein relates only to the
asset or assets constructed or acquired in connection therewith, (iv) any
Permitted Lien or any document or instrument governing any Permitted Lien,
provided that any such restriction contained therein relates only to the asset
or assets subject to such Permitted Lien or (v) customary restrictions and
conditions contained in any agreement relating to the sale of any Property
permitted under Section 8.4 pending the consummation of such sale.

     SUBPART 2.34 Amendment to Section 9.1(c). Subclause (ii) of Section 9.1(c)
of the Existing Credit Agreement is hereby amended and restated in its entirety
to read as follows:

          (ii) default in the due performance or observance of any term,
     covenant or agreement contained in Sections 7.1(a), (b), (c), (d), (o) or
     (p) and such default shall continue unremedied for a period of at least 5
     days after the earlier of an Executive Officer of a Credit Party becoming
     aware of such default or written notice thereof by the Administrative
     Agent; or

                                       15

<PAGE>

     SUBPART 2.35 Amendment to Section 9.1(j). Subclause (j) of Section 9.1 of
the Existing Credit Agreement is hereby amended and restated in its entirety to
read as follows:

(j) [Reserved]; or

     SUBPART 2.36 Amendment to Section 11.3(b). The proviso in Section 11.3(b)
of the Existing Credit Agreement is hereby amended and restated in its entirety
to read as follows:

          provided that (i) except in the case of an assignment of the entire
     remaining amount of the assigning Bank's commitment and the Loans at the
     time owing to it or in the case of an assignment to a Bank or an Affiliate
     of a Bank or an Approved Fund with respect to a Bank, any partial
     assignment shall not be less than $2,000,000 (or, if less, the remaining
     amount of the Commitment being assigned by such Bank) and an integral
     multiple of $100,000 in excess thereof, unless each of the Administrative
     Agent and, so long as no Event of Default has occurred and is continuing,
     the Borrower otherwise consents (each such consent not to be unreasonably
     withheld or delayed) and (ii) the parties to each assignment shall execute
     and deliver to the Administrative Agent an Assignment and Acceptance in the
     form of Exhibit 11.3(b) (an "Assignment and Acceptance"), together with a
     processing and recordation fee of $3,500.

     SUBPART 2.37 Amendment to Section 11.6(b). Section 11.6(b) of the Existing
Credit Agreement in hereby amended and restated in its entirety to read as
follows:

     (b) Neither this Agreement nor any other Credit Document nor any provision
hereof or thereof may be amended, modified, waived, discharged or terminated
except pursuant to an agreement or agreements in writing entered into by each of
the Credit Parties party thereto and the Required Banks; provided, however,
that:

     (i) no such agreement shall (A) decrease the principal amount of, or extend
the maturity of or the scheduled dates for the payment of principal of or
interest on, any Loan or LOC Obligations, or waive or excuse any such payment or
any part thereof or reduce the rate of interest on any Loan, without the written
consent of each holder affected thereby, (B) increase or extend the Commitment
or decrease the Unused Fee of any Bank without the written consent of each Bank
affected thereby, (C) amend or modify the definition of "Required Banks" or the
provisions of this Section 11.6, Section 3.13 or Section 11.2 without the
written consent of each Banks, (D) release the Borrower or substantially all of
the other Credit Parties from its or their obligations under the Credit
Documents without the written consent of each Bank, (E) except as a result of,
upon the occurrence of, or in connection with an Asset Disposition permitted by
Section 8.4, release all or substantially all of the Collateral without the
written consent of each Bank, (F) amend, modify or otherwise affect the rights
or duties of the Administrative Agent hereunder, without the written consent of
the Administrative Agent, or (G) amend, modify or otherwise affect the rights or
duties of the Issuing Lender hereunder, without the written consent of the
Issuing Lender,

                                       16

<PAGE>
         (ii) without the consent of the Required Revolving Banks and the
Required Banks, no Default or Event of Default may be waived for purposes of
Section 5.2(c) in respect of any proposed Revolving Loan borrowing or Letter of
Credit issuance or extension,

         (iii) without the consent of the Required Revolving Banks and the
Required Banks, no amendment, change, waiver, discharge or termination of
Section 2.1, 2.2, 3.3(a), 3.3(b)(i), 3.4(a), 3.5(a), 3.5(b)(i), 3.5(b)(ii), 5.2,
7.11, 7.12, 7.13, Section 8, Section 9, Section 11.6(b)(ii) or this Section
11.6(b)(iii) shall be effective,

         (iv) without the consent of the Required Term Loan Banks and the
Required Banks, no amendment, change, waiver, discharge or termination of
Section 2.3, 3.3(a), 3.3(b)(ii), (iii), (iv), (v), (vi), or (vii) or this
Section 11.6(b)(iv) shall be effective and

         (v) without the consent of the Required New Term Loan Banks and the
Required Banks, no amendment, change, waiver, discharge or termination of
Section 2.4, 3.3(a), 3.3(b)(ii), (iii), (iv), (v), (vi), or (vii) or this
Section 11.6(b)(iv) shall be effective.

         Each Bank and holder of any Note shall be bound by any modification or
amendment authorized by this Section regardless of whether its Notes shall be
marked to make reference thereto, and any consent by any Bank or holder of a
Note pursuant to this Section shall bind any person subsequently acquiring a
Note from it, whether or not such Note shall be so marked.

         SUBPART 2.38 Amendment to Section 11.18. Section 11.18 of the Existing
Credit Agreement is hereby amended and restated in its entirety to read as
follows:

         11.18 [Reserved].

         SUBPART 2.39 Schedule 1.1(c). A new Schedule 1.1(c) is hereby added to
the Existing Credit Agreement and shall read as provided on Schedule 1.1(c)
attached hereto.

         SUBPART 2.40 Schedule 7.18. Schedule 7.18 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as provided on
Schedule 7.18 attached hereto.

         SUBPART 2.41 Schedule 8.1. Schedule 8.1 of the Existing Credit
Agreement is hereby amended and restated in its entirety to read as provided on
Schedule 8.1 attached hereto.

                                    PART III
                           CONDITIONS TO EFFECTIVENESS

         This Amendment shall be and become effective as of the date (the
Amendment No. 4 Effective Date") when all of the conditions set forth in this
Part III shall have been satisfied.

         SUBPART 3.1 Execution of Counterparts of Amendment. The Administrative
Agent shall have received counterparts of this Amendment, which collectively
shall have been duly executed on behalf of each of the Borrower, the Subsidiary
Guarantors, the Banks and the Administrative Agent.

                                       17

<PAGE>

         SUBPART 3.2 Resolutions. The Administrative Agent shall have received
copies of resolutions (each in form and substance satisfactory to the
Administrative Agent and its counsel) of the Board of Directors of each Credit
Party approving and adopting this Amendment and authorizing execution and
delivery thereof, certified by a secretary or assistant secretary of such Credit
Party to be true and correct and in force and effect as of the Amendment No. 4
Effective Date.

         SUBPART 3.3 Legal Opinion. The Administrative Agent shall have received
legal opinions from counsel to the Credit Parties in form and substance
satisfactory to the Administrative Agent and its counsel.

         SUBPART 3.4 Fees and Expenses. The Borrower shall have paid (a) to the
Administrative Agent, for the account of each Bank, and amendment fee equal to
0.50% of such Bank's Commitment and (b) all costs and expenses heretofore
incurred by the Administrative Agent and the Banks, including without
limitation, the fees of Ernst and Young Corporate Finance LLC and Moore & Van
Allen, PLLC.

                                     PART IV

                                  MISCELLANEOUS

         SUBPART 4.1 Construction. This Amendment is a Credit Document executed
pursuant to the Existing Credit Agreement and shall (unless otherwise expressly
indicated therein) be construed, administered and applied in accordance with the
terms and provisions of the Amended Credit Agreement. Any Credit Party's failure
to comply with any of the terms or provisions set forth herein shall constitute
an Event of Default under the Credit Documents.

         SUBPART 4.2 Representations and Warranties. Each Credit Party hereby
represents and warrants that (i) each Credit Party that is party to this
Amendment: (a) has the requisite corporate power and authority to execute,
deliver and perform this Amendment, as applicable and (b) is duly authorized to,
and has been authorized by all necessary corporate action, to execute, deliver
and perform this Amendment, (ii) the representations and warranties contained in
Section 6 of the Amended Credit Agreement are true and correct in all material
respects on and as of the date hereof upon giving effect to this Amendment as
though made on and as of such date (except for those which expressly relate to
an earlier date) and (iii) no Default or Event of Default exists under the
Existing Credit Agreement on and as of the date hereof upon giving effect to
this Amendment.

         SUBPART 4.3 Reaffirmation of Existing Debt. The Credit Parties
acknowledge and confirm that (a) the Borrower's obligations to repay the
outstanding principal amount of the Loans is unconditional and not subject to
any offsets, defenses or counterclaims, (b) the Collateral Agent, on behalf of
the Banks, has a valid and enforceable first priority perfected security
interest in the Collateral, (c) the Administrative Agent, the Collateral Agent
and the Banks have performed fully all of their respective obligations under the
Amended Credit Agreement and the other Credit Documents, (d) by entering into
this Amendment, the Administrative Agent, the Collateral Agent and the Banks do
now waive or release any term or condition of the Amended Credit Agreement or
any of the other Credit Documents or any

                                       18

<PAGE>

of their rights or remedies under such Credit Documents or applicable law or any
of the obligations of any Credit Party thereunder and (e) that no Credit Party
has any claims, counterclaims, offsets, or defenses to the Credit Documents and
the performance of its obligations thereunder or if any Credit Party has any
such claims, counterclaims, offsets or defenses to the Credit Documents or any
transaction related to the Credit Documents, the same are hereby waived,
relinquished and released in consideration of the Banks' execution and delivery
of this amendment.

         SUBPART 4.4 Acknowledgement. The Guarantors acknowledge and consent to
all of the terms and conditions of this Amendment and agree that this Amendment
does not operate to reduce or discharge the Guarantors' obligations under the
Amended Credit Agreement or the other Credit Documents.

         SUBPART 4.5 Counterparts. This Amendment may be executed by the
parties hereto in several counterparts, each of which shall be deemed to be an
original and of which shall constitute together but one and the same agreement.

         SUBPART 4.6 Binding Effect. This Amendment, the Amended Credit
Agreement and the other Credit Documents embody the entire agreement between the
parties and supersede all prior agreements and understandings, if any, relating
to the subject matter hereof. These Credit Documents represent the final
agreement between the parties and may not be contradicted by evidence of prior,
contemporaneous or subsequent oral agreements of the parties. Except as
expressly modified and amended in this Amendment, all the terms, provisions and
conditions of the Credit Documents shall remain unchanged and shall continue in
full force and effect.

         SUBPART 4.7 GOVERNING LAW. THIS AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE GOVERNED BY AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

         SUBPART 4.8 Severability. If any provision of this Amendment is
determined to be illegal, invalid, or unenforceable, such provision shall be
fully severable and the remaining provisions shall remain in full force and
effect and shall be construed without giving effect to the illegal, invalid or
unenforceable provisions.

         SUBPART 4.9 Release. The Credit Parties hereby release the
Administrative Agent, the Collateral Agent, the Banks and each of their
respective officers, employees, representatives, agents, trustees, counsel and
directors (collectively, the "Released Persons") from any and all actions,
causes of action, claims, demands, damages and liabilities of whatever kind or
nature, in law or in equity, now known or unknown, suspected or unsuspected to
the extent that any of the foregoing arises from any action or failure to act by
any of the Released Persons on or prior to the date hereof.

                                       19

<PAGE>

     IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart of
this Amendment to be duly executed and delivered as of the date first
above written.

BORROWER:                ETHYL CORPORATION, a Virginia
---------
                         corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: Vice President, Treasurer, and
                                Principal Financial Officer

SUBSIDIARY
-----------
GUARANTORS:              THE EDWIN COOPER CORPORATION, a
-----------
                         Virginia corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: Treasurer

                         ETHYL ADDITIVES CORPORATION, a
                         Virginia corporation

                         By: /s/ Wayne C. Drinkwater
                             -------------------
                         Name: Wayne C. Drinkwater
                         Title: Treasurer

                         ETHYL ASIA PACIFIC COMPANY,
                         a Virginia corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: Vice President and Treasurer

                         ETHYL EXPORT CORPORATION,
                         a Virginia corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: President and Treasurer

                                       20

<PAGE>

                         ETHYL INTERAMERICA CORPORATION,
                         a Delaware corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: Vice President and Treasurer

                         ETHYL PETROLEUM ADDITIVES, INC.,
                         a Delaware corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: Treasurer

                         INTERAMERICA TERMINALS CORPORATION,
                         a Virginia corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: Treasurer

                         ETHYL VENTURES, INC.,
                         a Virginia corporation

                         By: /s/ D.A. Fiorenza
                             -----------------
                         Name: David A. Fiorenza
                         Title: President and Treasurer

                                       21

<PAGE>

ADMINISTRATIVE:          BANK OF AMERICA, N. A.,
---------------
AGENT:                   in its capacity as Administrative Agent
------                   and as Collateral Agent

                         By: /s/ Charles D. Graber
                             ---------------------
                         Name: Charles D. Graber
                         Title: Vice President

BANKS:                   BANK OF AMERICA, N. A., in its
------                   capacity as a Bank and Issuing Lender

                         By: /s/ H.G. Wheelock
                             -----------------
                         Name: H.G. Wheelock
                         Title: Managing Director

                         THE BANK OF NEW YORK

                         By: /s/ Christine T. Rio
                             --------------------
                         Name: Christine T. Rio
                         Title: Vice President

                         SUNTRUST BANK

                         By: /s/ George A. Ways
                             ------------------
                         Name: George A. Ways
                         Title: Managing Director

                         CREDIT LYONNAIS
                         NEW YORK BRANCH

                         By: /s/ Sandra E. Horowitz
                             ----------------------
                         Name: Sandra E. Horowitz
                         Title: Senior Vice President

                         WACHOVIA BANK, N.A.

                         By: /s/ Jill E. Snyder
                             ------------------
                         Name: Jill E. Snyder
                         Title: Director

                         STANDARD CHARTERED BANK

                         By:
                             ----------------
                         Name:
                         Title:

                                       22

<PAGE>

                         THE INDUSTRIAL BANK OF JAPAN,
                         LIMITED

                         By: /s/ Kolchi Hasegawa
                             -------------------
                         Name: Kolchi Hasegawa
                         Title: Senior Vice President
                                 and Deputy General Manager

                         THE SUMITOMO MITSUI BANKING
                         CORPORATION

                         By: /s/ Robert H. Riley III
                             ----------------------------
                         Name: Robert H. Riley III
                         Title: Senior Vice President

                         BANK ONE, NA

                         By: /s/ Hal E. Fudge
                             ----------------
                         Name: Hal E. Fudge
                         Title: First Vice President

                         BANKERS TRUST COMPANY

                         By: /s/ Scottye D. Lindsey
                             ----------------------
                         Name: Scottye D. Lindsey
                         Title: Vice President

                         KBC Bank N.V.

                         By: /s/ Patrick A. Janssens
                             -----------------------
                         Name: Patrick A. Janssens
                         Title: Vice President

                         By: /s/ Jean-Pierre Diels
                             -----------------------
                         Name: Jean-Pierre Diels
                         Title: First Vice President

                         FLEET NATIONAL BANK

                         By: /s/ Richard E. Lynch
                             --------------------
                         Name: Richard E. Lynch
                         Title: Vice President

                         GENERAL ELECTRIC CAPITAL
                         CORPORATION

                         By: /s/ Robert M. Kadlick
                             ---------------------
                         Name: Robert M. Kadlick
                         Title: Duly Authorized Signatory

                                       23

<PAGE>

                                 Schedule 1.1(c)
<TABLE>
<S> <C>
 (a)      Airframe:        One (1)  British Aerospace BAe 125 Series 800A airframe
                                    bearing FAA Registration No. N290EC and
                                    Manufacturer's Serial No. NA0444

 (b)      Engines:         Two (2)  Honeywell International Inc./Allied Signal, Inc./Garrett
                                    AiResearch engines Model No. TFE7315R-1H and
                                    bearing Manufacturer's Serial Nos. 91444 and 91450,
                                    respectively

 (c)      All appliances, interior and exterior furnishings, equipment,
          instruments, parts and accessories installed in or appurtenant to the
          above-described Airframe or Engines, including all records, logs and
          other materials related thereto.
</TABLE>

                                       24

<PAGE>

                                Schedule 7.18

         Real Estate Appraisals:

         Ethyl Corporation
         Headquarters-Main and East Buildings
         330 South Fourth Street
         Richmond, VA 23219

         Ethyl Petroleum Additives, Inc./ Ethyl Corporation
         Research and Development Center
         500 Spring Street
         Richmond, VA 23218

         Ethyl Corporation
         Information Technology Building
         201 South Third Street
         Richmond, VA 23218

         Ethyl Corporation
         North Office Building
         200 South Third Street
         Richmond, VA 23218

         Ethyl Corporation
         Additional Parking Lots
         500 and 600 Blocks of Byrd/Tredegar Streets
         Richmond, VA 23218

         Ethyl Corporation-Undeveloped Second Street Site
         Spring and Second Streets
         Richmond, VA 23218

         Ethyl Corporation-Undeveloped Oregon Hill Sites
         700 Block of Pine Street
         700 Block of Laurel Street
         812 Riverside Park
         Richmond, VA 23218

         Ethyl Petroleum Additives, Inc. - Natchez Plant
         151 L.E. Barry Road
         Natchez, MS 39120

         Ethyl Corporation - Houston Plant
         1000 N. South Avenue
         Pasadena, TX 77503

         Ethyl Additives Corporation - Port Arthur Plant
         Savannah Avenue, Gate 20
         Port Arthur, TX 77640

         Ethyl Petroleum Additives, Inc.- Sauget Plant
         501 Monsanto Avenue
         Sauget, IL 62201

                                       25

<PAGE>

         All Machinery and Equipment located at:

         Ethyl Petroleum Additives, Inc.
         Research and Development Center
         500 Spring Street
         Richmond, VA 23218

         Ethyl Corporation - Houston Plant
         1000 N. South Avenue
         Pasadena, TX 77503

         Ethyl Corporation - Natchez Plant
         151 L.E. Barry Road
         Natchez, MS 39121

         Ethyl Petroleum Additives, Inc. - Sauget Plant
         501 Monsanto Avenue
         Sauget, IL 62201

                                    SUBPART B
<TABLE>
<S> <C>
1.       Airplane                            Appraisal to be provided on or before March 31, 2002

2.       Artwork                             Appraisal to be provided on or before June 30, 2002

3.       Tredegar Gun Foundary               Appraisal to be provided on or before June 30, 2002
         500 Tredegar Street
         Richmond, VA 23219

4.       Riverfront Historic Buildings      Appraisal to be provided on or before June 30, 2002
         490 Tredegar Street
         Richmond, VA 23219
</TABLE>

                                       26

<PAGE>

                                  SCHEDULE 8.1

               Indebtedness of Ethyl Corporation and Subsidiaries

1.       Lubrizol Take-or-Pay phenate supply agreement:

Agreement of Sale covering Lubrizol 6499 between The Lubrizol Corporation,
having a principal place of business at 29400 Lakeland Blvd., Wickliffe, OH
44092-2298 and Ethyl Petroleum Additives, Inc., having a principal place of
business at 330 South Fourth Street, Richmond, VA 23219 entered into as of July
1, 1997 and having a termination date of December 31, 2005 and evergreen
thereafter until terminated by either party upon no less that 24 months notice.
Beginning January 1, 2002, the maximum annual take obligation is 8,075 metric
tons. Beginning January 1, 2002, the maximum annual payment of failure to take
would be $2,422,500.

2. Indebtedness to third parties secure the performance of tenders, statutory
obligations, surety bonds, appeal bonds, bids, leases (other thatn Capital
Leases), performance bonds, purchase, construction or sales contracts and other
similar obligations, in each case incurred in the ordinary course of business
and not incurred or made in connection with the borrowing of money, the
obtaining of advances of credit or the payment of the deferred purchase price of
property.

3. Indebtedness in respect of procurement credit card arrangements with one of
the Banks collateralized by cash in an amount not to exceed $325,000 in the
aggregate for all such programs.

4. The following Standby Letters of Credit of Ethyl Asia Pacific Company issued
by Bank of America, N.A.:
<TABLE>

         ---------------------- ------------------------------------- -------------- ----------------- --------------
         Ref No.                Beneficiary                           Amount (USD)   Date of           Maturity
                                                                                     Issue             Date
<S><C>
         ---------------------- ------------------------------------- -------------- ----------------- --------------
         GT094047/00            Heilongjiang Daqing                   30,266.25      2/8/00            1/31/03
                                Petroleum Technology I & E
         ---------------------- ------------------------------------- -------------- ----------------- --------------
         GT094226/00            Heilongjiang Daqing                   46,260.24      5/5/00            5/3/03
                                Petroleum Technology I & E
         ---------------------- ------------------------------------- -------------- ----------------- --------------

</TABLE>
                                       27<PAGE>

                                                                    Exhibit 10.8

                              AMENDED AND RESTATED
                      PRODUCT MARKETING AND SALES AGREEMENT

         THIS AMENDED AND RESTATED PRODUCT MARKETING AND SALES AGREEMENT (this
"Agreement") is made as of the 13th day of June, 2001, by and between Alcor
Chemie Vertriebs AG, a corporation organized under the laws of Switzerland,
acting on behalf of itself and its Affiliates (individually and collectively,
"Alcor Vertriebs"), Alcor Chemie AG, a corporation organized under the laws of
Switzerland, acting on behalf of itself and its Affiliates (individually and
collectively, "Alcor Chemie"), NOOFOT GmbH, a limited liability company
organized under the laws of Switzerland, acting on behalf of itself and its
Affiliates (individually and collectively, "Noofot") together with Alcor
Vertriebs and Alcor Chemie, "Alcor") and Ethyl Services GmbH, a limited
liability company organized under the laws of Switzerland, acting on behalf of
itself and its Affiliates (collectively, "Ethyl").

         WHEREAS, Alcor and Ethyl each desire to amend and restate the terms of
that certain Product Marketing and Sales Agreement, dated as of January 1, 2000,
by and among Alcor Vertriebs, Alcor Chemie and Ethyl (the "Product Marketing and
Sales Agreement"); and to add Noofot as a Party to the Product Marketing and
Sales Agreement.

         WHEREAS, governmental authorities in countries around the world have
promulgated laws and regulations which have effectively banned or severely
limited the amount of lead antiknock compounds which can be used in motor fuels
for health, safety and environmental reasons;

         WHEREAS, said governmental authorities have continued to take actions
and plan to take additional measures in the future to further reduce or
eliminate the amount of AK currently used in motor fuels;

         WHEREAS, because these actions have accelerated the reduction of demand
for AK, the product life of AK has been significantly reduced as a useful
additive in motor fuel;

         WHEREAS, as a result of these actions and other factors, it has and
will continue to become increasingly more expensive and inefficient to market
and to sell the ever decreasing amount of AK throughout the world as this
product reaches the end of its life cycle;

         WHEREAS, because of these and other factors, Noofot has entered into
that certain Marketing, Supply and Service Agreement with Veritel Chemicals
B.V., a company organized under the laws of The Netherlands ("Veritel"), and
General Innovative Investments N.V., a company organized under the laws of the
Netherlands Antilles ("GII"), as well as that certain Purchase and Sales
Commission Agreement with Veritel such agreement relating to the supply and
provision of services in the marketing and sale of AK under certain terms and
conditions;

         WHEREAS, Noofot has agreed to assign to Alcor in its entirety the
Marketing, Supply and Service Agreement, the Purchase and Sales Commission
Agreement, and all other agreements that Noofot has entered into effective as of
June 13, 2001;

         WHEREAS, Alcor and Ethyl believe that significant cost savings and
efficiencies and health, safety and environmental benefits can be realized by
entering into this Agreement to

<PAGE>

market and  promote  the sale and safe  distribution  of AK in certain  areas of
the world as the demand for AK  continues  to decline;

         NOW, THEREFORE, in consideration of the mutual covenants and promises
contained herein, the Parties agree as follows:

1.       Definitions
         ------------

         As used in this Agreement, the following terms shall have the following
meanings:

         Affiliates of any Person shall mean any entity controlling, controlled
         by or under common control with such Person and in addition if such
         Person is a Party, any entity which succeeds to that portion of the
         business or ownership of the assets of that Party to which this
         Agreement pertains.

         Agreement shall mean this Amended and Restated Product Marketing and
         Sales Agreement.

         Agreement Activities shall mean all of the activities performed by the
         Parties pursuant to the terms of this Agreement. It is specifically
         agreed that the manufacture of Product is not one of the Agreement
         Activities.

         Agreement Proceeds shall mean the amount determined pursuant to
         Schedule B to this Agreement.

         Alcor shall mean individually and collectively Alcor Vertriebs and
         Alcor Chemie and their respective Affiliates.

         Bulk Distribution Agreement shall mean the Agreement for Bulk
         Transportation between The Associated Octel Company Limited and Ethyl
         Corporation, dated as of March 25, 1994, as amended.

         Bulk Distribution Services shall mean the bulk distribution services
         provided by Ethyl described in Paragraph 9(a) of this Agreement.

         Change of Control shall mean:

             (i)   the acquisition by an independent third party(ies) of
                   more than 50 percent of the outstanding voting stock
                   of Octel Corp, The Associated Octel Company Limited,
                   OBO Adler Company Limited, Alcor, Noofot, Ethyl
                   Corporation or Ethyl but excluding the formation of a
                   new holding company and inter-group reorganizations
                   so long as there is no change in the ultimate control
                   of the applicable company listed above; or

             (ii)  the  acquisition  by an  independent  third  party(ies)  of
                   substantially  all the AK  business  assets of Octel  Corp.,
                   The Associated Octel Company Limited, OBO Adler Company
                   Limited, Alcor, Noofot, Ethyl Corporation or Ethyl; or

                                      - 2 -

<PAGE>

            (iii)  the assignment to an independent third party(ies) by
                   either Party of substantially all of their rights or
                   obligations under this Agreement.

         Notwithstanding the above, Change of Control shall not mean any
         internal reorganization of one or more of Octel Corp., The Associated
         Octel Company Limited, OBO Adler Company Limited, Alcor, Noofot, Ethyl
         or Ethyl Corporation and their respective Affiliates, including any
         spin-off or split-off of assets or businesses to the shareholders of
         any of the aforementioned Persons or the purchase of stock, assets or
         businesses conducted by any of the aforementioned Persons by any person
         or group which owns 20 percent or more of the voting stock of such
         Person as of the date of this Agreement.

         Contract Year shall mean the period beginning on January 1, 2000 and
         ending on December 31, 2000 and each calendar year thereafter during
         the term of this Agreement and any extension thereof.

         Council shall mean the Strategic Council.

         Effective Date shall mean January 1, 2000.

         Embargoed  Countries shall mean any country or countries that is
         subject to sanctions  imposed by the United States government pursuant
         to the Trading  With the Enemy Act (50 App.  U.S.C.A.ss.1) or The
         International  Emergency  Economic  Powers Act (50 U.S.C.A.ss.1701).

         Ethyl shall mean Ethyl Service GmbH and its Affiliates.

         Ethyl Corporation shall mean Ethyl Corporation and its Affiliates.

         GII shall mean General Innovative Investments, a company organized
         under the laws of The Netherlands Antilles and its Affiliates.

         EEA shall mean these countries that are from time to time members of
         the European Economic Area.

         LIBOR shall mean the London interbank offered rate in effect from time
         to time as published in The Financial Times on the date in question or,
         if not published on such date, on the immediately preceding date on
         which it was published.

         Marketing, Supply and Service Agreement shall mean              .

         Noofot shall mean Noofot GmbH and its Affiliates.

         North America shall mean the countries of Canada and the United States.

         Octel Corp. shall mean Octel Corp. and its Affiliates.

         Octel Guaranty shall mean                .

                                      - 3 -

<PAGE>

         Parties or Party shall mean collectively and individually each of Alcor
         and Ethyl.

         Party Services shall mean all of the services performed by the Parties
         pursuant to the terms of this Agreement.

         Person shall mean an individual, a partnership, a corporation, a
         company, an association, a joint stock company, a trust, a joint
         venture, an unincorporated organization or a governmental entity (or
         any department, agency or political subdivision thereof.)

         Product shall mean lead alkyl antiknock compounds ("AK") made available
         for sale, marketed and/or sold, directly or indirectly, to customers
         for use in the Territory by Alcor and/or Noofot and any new or modified
         lead alkyl products made available for sale, marketed and/or sold,
         directly or indirectly, by Alcor and/or Noofot during the term of this
         Agreement or any extensions thereof.

         Purchase and Sales Commission Agreement shall mean                .

         Services shall mean the Party Services.

         Sintez shall mean the Sintez Joint Stock Company, a joint stock company
         organized under the laws of the Russian Federation and its Affiliates.

         Sintez Guaranty shall mean                           .

         Territory shall mean all of the countries and regions of the world,
         other than, and specifically excluding North America and the Embargoed
         Countries.

         United States shall mean the fifty states of the United States of
         America, the District of Columbia and all possessions and territories
         of the United States of America, including Puerto Rico and the United
         States Virgin Islands.

         Veritel shall mean Veritel Chemicals B.V. a company organized under the
         laws of The Netherlands and its Affiliates.

         Wholesale Price shall mean the cost for all Product sold in the
         Territory which shall be calculated by using the applicable pricing
         formula set forth in Schedule G to this Agreement. The Parties
         acknowledge that the applicable prices set forth in Schedule G to this
         Agreement were negotiated at arms length.

         Working Capital shall mean the working capital as determined in
         accordance with Schedule D to this Agreement.

                                      - 4 -

<PAGE>

2.       Purpose of the Agreement

         The purpose of this Agreement is to establish a marketing, distribution
and service arrangement for direct and indirect sales of Product by the Parties
to customers for use in the Territory. Alcor and Ethyl each agree, and shall
cause each of their respective Affiliates to agree, to exclusively market and
sell Product to customers for use in the Territory pursuant to the terms of this
Agreement. To support this marketing, distribution and service arrangement, each
Party will provide various goods and services to the other Party. GII and/or
Veritel will provide certain services to Alcor pursuant to the Marketing, Supply
and Service Agreement and the Purchase and Sales Commission Agreement as more
specifically set forth in such agreements. The rights conferred by this
Agreement are strictly contractual in nature, it being expressly understood and
agreed that neither Party shall by reason of this Agreement be deemed to have
entered into a partnership or to have acquired directly or indirectly any stock,
share capital, equity or other interest in the other Party. It is further
understood and agreed that the Agreement Activities are limited strictly and
exclusively to the Territory and shall not extend beyond the Territory. Unless
earlier terminated pursuant to this Agreement, this marketing, distribution and
service arrangement shall continue so long as sales of Product in the Territory
remain economically feasible. The proceeds generated from the sale of Product
resulting from deliveries made to customers in the EEA by Alcor and Ethyl on or
after June 13, 2001 shall be calculated and accounted for using the same basis
as set forth in Schedule B and Schedule D and shall be included in determining
Agreement proceeds pursuant to Schedule B of this Agreement and such deliveries
of Product to customers in the EEA shall be treated as if made pursuant to the
terms of this Agreement.

3.       Payment for Services

         a.  The Parties hereby acknowledge and agree that on April 19,
             2000, Ethyl paid to Alcor the sum of       as a prepaid cost to
             Alcor for providing its Party Services pursuant to this
             Agreement.

         b.  The Parties further acknowledge and agree that Ethyl paid to
             Alcor interest in the aggregate amount of       on the prepaid
             service cost of       for the period commencing on January 1, 2000
             until April 18, 2000.

         c.  Ethyl shall pay to Alcor the sum of       by wire transfer of
             immediately available funds to an account designated by Alcor
             or one of its Affiliates within three days after the execution
             of this Agreement for payment for services described in this
             Agreement. For the avoidance of doubt, such payment shall not
             constitute a cash advance from Ethyl to Alcor pursuant to
             Schedule D of this Agreement and no portion of such payment
             shall be refundable or returnable to Ethyl pursuant to this
             Agreement.

4.       Territory

         This Agreement and its terms shall only apply to activities within the
Territory. Neither Party shall have any rights, responsibilities or obligations
to the other Party under this

                                      - 5 -

<PAGE>

Agreement for activities relating to the manufacture, distribution, marketing
and sale of Product to:

         a.  customers outside the Territory; and

         b.  customers inside the Territory prior to the Effective Date of this
             Agreement.

         c.  customers inside the EEA prior to June 13, 2001.

         d.  customers inside Russia for Product sourced from Sintez after
             June 13, 2001.

5.       Representation and Warranties

         a.  Alcor represents and specifically warrants to Ethyl as partial
             consideration for and as an inducement for Ethyl to enter into
             this Agreement, to the best of its actual knowledge, that the
             statements contained in this Paragraph 5(a) are correct and
             complete as of June 13, 2001 and as of the date this Agreement
             is signed by each of the Parties. For purposes of this
             paragraph of the Agreement and this paragraph only, Territory
             shall mean all countries and regions of the world excluding
             the United States and Russia.

               (i)

               (ii)

               (iii)

               (iv)

               (v)

               (vi)

               (vii)

               (viii)

                                      - 6 -

<PAGE>

         b.  Each Party represents and specifically warrants to the other Party
             as partial consideration for and as an inducement for such Party to
             enter into this Agreement that the statements contained in this
             Paragraph 5(b) are correct and complete as of the date this
             Agreement is signed by each of the Parties.

             (i)  Such Party is a company duly organized and validly existing
                  under the laws of the jurisdiction of its formation.

             (ii) Such Party has full power and authority to enter into and
                  deliver this Agreement and perform its obligations hereunder.
                  This Agreement does not (i) require the consent of any third
                  Person and/or (ii) constitute a material breach or default or
                  permit termination, modification or acceleration of any
                  contract or agreement. This Agreement constitutes the valid
                  and legally binding obligations of such Party, enforceable in
                  accordance with its terms.

6.       Operations
         -----------

         Each Party shall independently provide its Party Services and be solely
responsible for the manner in which they are carried out.

7.       The Strategic Council
         ---------------------

         The Party Services will be overseen by the Council composed of six
members. Three members shall be appointed at the sole discretion of each Party.
The actions of the Council shall be governed as provided in Schedule A to this
Agreement.

8.       Party Services
         --------------

         Party Services provided by each Party hereunder shall be directed by a
manager who will be subject to oversight by the Council (the "Manager"). The
Manager shall be selected by Alcor. Alcor will consult with the Council about
the selection of the Manager but shall retain the ultimate right to make such
selection. The Manager shall be responsible for directing the performance of
Party Services. Employees providing Services under this Paragraph 8 of the
Agreement shall remain employees of the respective Parties. The Parties shall be
reimbursed in accordance with Schedule C to this Agreement for the cost
associated with the provision of such Services. In addition to providing those
Services, the Parties shall provide upon request from the

                                      - 7 -

<PAGE>

Manager and approval by the Council, consulting and other services in support of
this Agreement.

         The Manager shall prepare for review at each scheduled Council meeting
a report on the sales and marketing activities within the Territory, including
financial results for the period as well as any significant issues affecting
such activities. The format and content of such report shall be subject to
approval by the Council.

9.       Product
         -------

         Except as otherwise approved by the Council, all Product marketed
pursuant to this Agreement shall be provided by one or more of Veritel, Alcor or
its Affiliates. Alcor, its Affiliates and Veritel, shall supply all of the
Product requirements for sale to customers for use in the Territory during the
term of, or any extension of, this Agreement. The Wholesale Price shall be
determined in accordance with Schedule G to this Agreement as of the date of
timely invoice to customers.

10.      Distribution Services
         ---------------------

         Ethyl and Alcor shall jointly review the costs of distribution by bulk
and non-bulk with the objective of minimizing the overall distribution costs
within the Territory, and shall cooperate with each other to reduce the costs of
bulk and non-bulk distribution (including maintenance, decontamination and
disposal of distribution equipment).

         a.  Bulk Distribution. Alcor and Ethyl agree that the Bulk
             Distribution Services required to deliver Product to customers
             in the Territory shall be provided under the Bulk Distribution
             Agreement for as long as such bulk distribution services are
             utilized. Except as otherwise provided in the Bulk
             Distribution Agreement, all equipment used to provide these
             services shall remain the property of Ethyl or one of its
             Affiliates and Ethyl shall be responsible for properly
             maintaining such equipment as well as decontaminating and
             disposing of such equipment as required by law under the terms
             of the Bulk Distribution Agreement when no longer suitable for
             use.

         b.  Non-Bulk  Distribution  Services.  Alcor and Ethyl agree that the
             Non-Bulk  Distribution Services required to deliver Product to
             customers  in the  Territory  shall be provided on terms set forth
             in Schedule C to this  Agreement.  All equipment  and  facilities
             used to  provide  these  services  shall  remain  the  property  of
             the Party  owning the equipment.  Each Party shall be responsible
             for  decontaminating  and disposing of such equipment as required
             by law when no longer  suitable for use,  except where such
             equipment is purchased or leased after the  Effective  Date for
             exclusive use in the Territory by Alcor, in which case any required
             decontamination  and disposal  thereof shall be provided by Alcor
             under Schedule C, Section A-I, to this Agreement,  provided such
             services are cost competitive with other  decontamination  services
             available at that time and meet the environmental and responsible
             care standards of each of Alcor and Ethyl.  For Product shipped in
             equipment from facilities maintained by Alcor or one or more

                                      - 8 -

<PAGE>

              of its Affiliates, all equipment shall be in good operating
              condition, fit for the purposes intended, and duly certified.
              Maintenance services for non-bulk distribution equipment and
              acquisition or lease of new equipment for such use shall be
              pursuant to Schedule C, Sections A-I and B-I, to the
              Agreement. At Alcor's request and at Ethyl's option, Ethyl
              shall provide terminaling services at its facilities in
              Dordrecht, The Netherlands, and Singapore to Alcor in support
              of sales of Product to customers in the Territory upon the
              terms and compensation set forth in Schedule C, Section B-I,
              to this Agreement, the amount of such compensation to be
              pre-notified upon request by Alcor.

11.      Marketing, Sales and Distribution Services
         ------------------------------------------

         Marketing, sales and distribution services means the marketing, sales
and distribution services and support services to effectively sell Product to
customers for use in the Territory including but not limited to administrative,
logistics and order processing services, technical support, professional
services, and information technology. All marketing and sales of Product to
customers for use in the Territory pursuant to this Agreement shall be by and in
the name of one or more of Alcor and its Affiliates or, at Alcor's authorization
and direction, in the name of Veritel pursuant to the Marketing, Supply and
Service Agreement and the Purchase and Sales Commission Agreement. Except as
otherwise provided in this Agreement, all orders shall be placed with one or
more of Alcor and its Affiliates, and one or more of Alcor and its Affiliates
shall collect all proceeds from such sales. Such Services shall be provided by
Alcor and its Affiliates pursuant to Schedule C, Section A-I(ii) to this
Agreement                   .

12.      Agreement Proceeds Calculation
         ------------------------------

          a.

          b.

          c.

                                      - 9 -

<PAGE>

13.      Payments
         --------

         a.  The Parties agree that, except as otherwise expressly stated
             herein, cash distributions relating to Party Services shall be
             made within 15 days following the end of the month to which
             they relate and shall be calculated as provided in Schedule D.

         b.  For the term of this Agreement, Ethyl agrees to maintain its
             Swiss company status and to submit itself to Swiss tax
             jurisdiction and pay applicable Swiss tax attributable to
             funds received pursuant to this Agreement. Ethyl will furnish
             Alcor with written confirmation when such return is filed and
             payments are made. Ethyl shall also provide Alcor with prompt
             notice of any actions or circumstances beyond their control
             which may have the effect of removing Ethyl from Swiss tax
             jurisdiction.

         c.  Alcor and Ethyl  believe  that under  current  Swiss law Alcor is
             not  required  to  withhold  taxes from any amounts payable to
             Ethyl under this Agreement and accordingly,  that all such payments
             should be made gross of tax.  However, if in the future the
             applicable  revenue ruling is reversed or is no longer  applicable
             due to actions beyond Alcor's control and Alcor should reasonably
             determine that tax withholding on amounts to be paid to Ethyl is
             required,  then Alcor may, after advising Ethyl of the basis for
             its determination,  effect withholding as appropriate. If, based on
             Alcor's conclusion that withholding is not legally required,  Alcor
             makes payments to Ethyl without withholding taxes and it is later
             determined  that  withholding  was required,  Ethyl shall
             indemnify  Alcor for any liability  Alcor suffers from having
             failed to withhold such taxes.

         d.  Ethyl shall have the right, in good faith by appropriate
             proceedings to contest in Alcor's name any withholding taxes
             which Alcor has reasonably determined and required by law to
             be made. Alcor agrees to cooperate fully with Ethyl in any way
             Ethyl may reasonably request in connection with such contest.

         e.  Any contest conducted by Ethyl shall be conducted at Ethyl's
             expense and in the event of any penalties, interest or late
             charge with respect to taxes as a result of such taxes become
             payable, Ethyl shall reimburse Alcor for the same.

14.      Audit and Investigation Rights
         ------------------------------

         a.  Each Party providing Services and/or providing Product
             pursuant to this Agreement shall prepare and maintain the
             necessary books and accounting records as required by good and
             prudent business practice and generally accepted accounting
             principles. Such records shall accurately reflect the cost of
             Services and/or Product provided by such Party or such Party's
             Affiliates. Alcor shall cause an annual audit of the financial
             reports under this Agreement to be conducted and the cost of
             such audit shall be covered under this Agreement.

                                     - 10 -

<PAGE>

         b.  In addition,  each Party shall have the right to have an
             independent  auditor  conduct a special  examination  of, or
             perform an agreed upon  procedures  review (each,  an "Audit") in
             connection  with such records to determine if such records
             accurately reflect the financial results of the activities
             conducted pursuant to this Agreement  (including the Agreement
             Proceeds  Calculation) and that Services and/or Product provided by
             each of the Parties were accurately recorded and the charges for
             such  Services and Product were correct.  Such Audit shall be
             conducted  under the terms of a  confidentiality  agreement  and
             shall be used for the sole  purpose of  determining  whether an
             overcharge  or undercharge  has occurred.  Such Audit will be
             conducted  during normal business hours and shall be at the expense
             of the Party  requesting  the  Audit.  Only the final  report of
             the  auditor's  conclusions  will be  provided  to both Parties.
             If such Audit reveals a discrepancy in favor of the Party
             requesting said Audit, and upon agreement of the other Party,  said
             discrepancy  shall be promptly  reimbursed.  If the Parties cannot
             reach agreement  regarding the auditor's  report,  either Party may
             exercise its rights under Paragraph 18 of this Agreement which
             shall constitute the sole remedy of the Parties to resolve the
             matter.  Upon resolution of the matter,  the successful  Party
             shall be entitled  to  interest  on the  amount  owed from the date
             such sum was due to the date such sum was paid.  Interest shall be
             calculated at the rate of LIBOR plus three percent per annum.  If
             the Audit  determines  that an overcharge of less than  US$100,000
             has  occurred,  the Parties shall divide the cost of the Audit
             equally  between them.  If, pursuant to such an Audit,  it is
             determined that an overcharge in excess of US$100,000 has occurred
             to the detriment of the Party requesting the Audit, then the cost
             of the Audit shall be paid by the other Party.

15.      Term of the Agreement
         ---------------------

         This Agreement shall become effective as of the Effective Date and
shall continue for an initial term of 11 Contract Years and successive Contract
Years thereafter so long as Alcor, its successor or its Affiliates continues to
make Product available for sale (whether directly or indirectly), provided that
neither Alcor nor Ethyl invokes its rights under Paragraph 17 of this Agreement.

16.      Insurance and Liabilities
         -------------------------

         a.  Each Party shall obtain and maintain during the term of this
             Agreement with insurers reasonably acceptable to the other
             Party insurance coverage of the types and minimum limits as
             set forth in Schedule F to this Agreement with regard to
             supplying Product and performing Party Services pursuant to
             this Agreement.

         b.  As to claims between the Parties:

             (i)  In the event Product for sale to customers within the
                  Territory supplied by: (A) one or more of Alcor and
                  its Affiliates and manufactured by one or more of
                  Alcor and its Affiliates or one or more of Ethyl and
                  its Affiliates, fails to be of merchantable quality
                  and meet the required customer Product
                  specifications, the supplier of such Product shall be
                  responsible at its sole

                                     - 11 -

<PAGE>

                  expense for the costs of returning, reprocessing (including
                  disposal, if necessary) and/or replacement of such
                  material with Product which is merchantable and meets
                  the required customer Product specifications at such
                  supplier's sole expense; and (B) Veritel, GII or
                  Sintez fails to be of merchantable quality and meet
                  the required customer Product specifications, Alcor
                  shall advise the Strategic Council promptly of the
                  rights and remedies available to it under the terms
                  of the Marketing, Supply and Service Agreement and
                  the Sintez Guaranty to seek recovery for the costs,
                  expenses and losses incurred as a result of such
                  failure. Any course of action to seek or not seek
                  recovery shall be approved by the Council.

           (ii)   Each Party shall perform Party Services in a safe,
                  professional, cost-effective manner in accordance
                  with industry standards and the requirements of the
                  Council. In the event a Party performs services and
                  such services are improperly or negligently
                  performed, the supplier of such services as its sole
                  liability in respect of such failure shall not be
                  entitled to the relevant service fee as set forth in
                  Sections A-I and B-I of Schedule C to this Agreement
                  in respect of such unsatisfactory services.

           (iii)  Without prejudice to Paragraphs 16(b)(i) and (b)(ii),
                  there shall be no claims made by either Party against
                  the other Party in providing Product and/or rendering
                  Party Services pursuant to this Agreement for any
                  direct, indirect or consequential loss (including
                  lost profits) as a result of non-compliance
                  irrespective of the cause or reason unless such loss
                  or damage arises as a direct result of a deliberate
                  act or omission of a Party with the intent of causing
                  economic loss to the other Party, a material breach
                  of or a wilful refusal of a Party to comply with the
                  terms of this Agreement.

      c.

                                     - 12 -

<PAGE>

17.      Termination
         -----------

         This Agreement is terminable under the following circumstances:

         a.  The Agreement is terminable at any time by mutual agreement in
             writing of the Parties.

         b.  Provided such information is not confidential, each Party
             shall give not less than 30 days notice of a possible Change
             of Control. In any event, each Party shall notify the other
             immediately following a Change of Control. Upon a Change of
             Control, the other Party may terminate this Agreement by
             giving written notice and by tendering the Termination Fee (as
             defined below) in cash within 30 days of the determination of
             the Termination Fee.

         c.  Either Party may terminate this Agreement upon the expiration
             of the 11th Contract Year by providing written notice 180 days
             prior to expiration of the 11th Contract Year, or successive
             Contract Years, and making a payment to the non-terminating
             party in an amount equal to the Termination Fee less any
             amounts owed by one Party to the other within 30 days of
             determination of the Termination Fee. Giving notice and then
             failing to make the Termination Fee payment to the other Party
             under Paragraph 17(c) herein shall preclude the Party giving
             notice from serving another notice of termination within two
             years from the date of the original notice.

         d.  Upon termination of this Agreement pursuant to Paragraphs
             17(b) or (c), the Party receiving the Termination Fee shall
             not within a period of three years engage in the sale of
             Product in the Territory.

         e.  If neither Party terminates this Agreement pursuant to this
             provision as provided in the provisions of Paragraphs 17(a),
             (b) or (c), this Agreement shall continue in full force and
             effect for successive Contract Years thereafter as provided in
             Paragraph 15.

         f.

         g.

                                     - 13 -

<PAGE>

         h.  The Parties agree that the  provisions of this  Paragraph 17 shall
             not constitute a lien or encumbrance on the assets or the property
             of either Party.

18.      Disputes
         --------

         Except as otherwise provided herein, any dispute between the Parties
with respect to this Agreement or matters upon which the Council cannot agree
and an impasse is reached shall be resolved in accordance with the dispute
resolution procedure set forth in Schedule E to this Agreement.

19.      Contingencies
         -------------

         Neither Alcor nor Ethyl shall be liable for failure to perform its
obligations as required under this Agreement where such failure to perform is
caused by an event or circumstance beyond the reasonable control of the Party
affected thereby (each, a "Force Majeure Event"). Without limiting the
generality of the forgoing, a Force Majeure Event may include fire, storm,
flood, act of God, war, explosion, sabotage, strike or other labor trouble,
shortage of fuel and or raw material, embargo, car/wagon shortages, accident,
expropriation of plant or equipment, shortage of Product and or raw materials
caused in whole or in part by any governmental authority, inability to secure
machinery and or other equipment or energy or raw materials for the manufacture,
transport or distribution of Products, inability to obtain vessel or cargo
insurance at reasonable cost due to war, revolution or civil interest, or acts
or threats of action by any government or any agency thereof or any other event
or circumstance beyond the reasonable control of either Party. No event or
circumstance shall serve to excuse an obligation to perform hereunder if such
event could have been prevented through exercise of reasonable diligence. A
Party claiming the benefit of this provision shall provide written notice of the
Force Majeure Event to the other Party and take all reasonable steps to cure the
problem causing the inability to perform such required service.

20.      Waiver
         ------

         Failure of either Party to insist in any instance on the strict
performance of any term, provision or condition of this Agreement or to exercise
any option herein contained shall not be construed as a waiver of such term,
provision, condition or option in any other instance.

                                     - 14 -

<PAGE>

21.      Assignment
         ----------

         The rights and obligations of any Party hereunder shall not be assigned
or transferred without the prior written consent of the other Party, such
consent not to be unreasonably withheld. The foregoing notwithstanding, either
Party may, without the consent of the other Party, assign all or part of its
rights under this Agreement to an Affiliate of the assignor or to another party
in connection with its merger or transfer to such other Party of substantially
all of its assets or of the business or assets to which this Agreement pertains.
Nothing herein shall restrict any corporate reorganization by a Party that does
not constitute a Change of Control.

22.      Notices
         -------

         Notice to either Party under any provision of this Agreement shall be
deemed good and sufficient if (i) delivered in writing in person, (ii) sent by
facsimile to the other Party with confirmation of receipt of transmission and
promptly confirmed by air mail or (iii) delivered by commercial courier to the
address of such party noted below or such other address as such Party has
directed in a signed writing. Notice shall be effective on the date delivered in
person, sent by facsimile or delivered by commercial courier, whichever is
applicable.

         Address for notices:

                  If to Alcor, to:
                  ---------------

                  Alcor Chemie Vertriebs
                  Ruessenstrasse 16-18
                  CH - 6340 Baar
                  SWITZERLAND

                  with a copy to:
                  --------------

                  Alcor Chemie AG
                  Ruessenstrasse 16-18
                  CH-6340 Baar
                  SWITZERLAND

                  with a copy to:
                  --------------

                  NOOFOT GmbH
                  Ruessenstrasse 16-18
                  CH-6340 Baar
                  SWITZERLAND

                                     - 15 -

<PAGE>

                  and a copy to:
                  -------------

                  The Associated Octel Company Limited
                  Global House, Bailey Lane
                  Manchester M90 4AA
                  UNITED KINGDOM
                  Attn:    John Tayler
                           Corporate Secretary and General Counsel

                  and a copy to:
                  -------------

                  Kirkland & Ellis
                  Tower 42, 25 Old Broad Street
                  London EC2N 1HQ
                  UNITED KINGDOM
                  Attn:    Samuel A. Haubold, Esq.

                  If to Ethyl, to:
                  ---------------

                  Ethyl Services GmbH
                  c/o Schild Treuhand A.G.
                  Grafenauweg 8
                  P.O. Box 4763
                  CH-6304 Zug
                  SWITZERLAND

                  with a copy to:
                  --------------

                  Ethyl Corporation
                  Vice President and General Counsel
                  P.O. Box 2189 (23218-2189)
                  330 South Fourth Street
                  Richmond, VA 23219
                  UNITED STATES OF AMERICA

23.      Miscellaneous
         -------------

         a.  This Agreement (including the documents and Schedules referred
             to herein) constitutes the entire agreement between the
             Parties and supersedes any prior understandings, agreements,
             or representations by or between the Parties, written or oral,
             to the extent they related in any way to the subject matter
             hereof. No change or modification shall be effected except by
             a writing agreeing to the modification or change executed by a
             duly authorized officer of each Party.

         b.  If terms of this Agreement are found by a court of competent
             jurisdiction to be unlawful, unenforceable and/or legally
             non-binding on either Party, the Parties agree that such terms
             shall not affect the validity of the remainder of this
             Agreement and the Parties agree to substitute terms in this
             Agreement as near to

                                     - 16 -

<PAGE>

             the intent of the invalid or unenforceable provisions as is
             legally permissible. The Parties shall negotiate in good faith
             to make such changes in this Agreement as shall most nearly
             preserve the overall commercial intention of the Parties in
             entering into this Agreement. If it is determined by a court
             or governmental agency having competent jurisdiction that this
             Agreement is totally invalid, unlawful or unenforceable and an
             arrangement providing the same economic benefits to the
             Parties cannot be substituted, the Parties agree to negotiate
             in good faith to determine an amount to return the Parties so
             far as possible to the position they would have been in had
             this Agreement not been entered into. If the Parties cannot
             reach an agreement on the required adjustments within 90 days
             from the date this Agreement is found to be invalid, unlawful
             or unenforceable, then the matter shall be subject to the
             dispute resolution procedure set forth in Schedule E to this
             Agreement. If agreement cannot be reached by the Parties under
             the procedure, the arbitrators impaneled under the procedure
             shall determine the financial adjustments required to return
             the Parties so far as is possible to the position they would
             have been in had this Agreement not been entered into.

         c.  Under no circumstances shall the Parties discuss with one
             another (or provide one another with any information)
             concerning prices to customers, terms of supply, and other
             competitive information of the lead antiknock compound market
             in the United States.

         d.  This Agreement shall be governed by, construed and enforced in
             accordance with the laws of the Commonwealth of Virginia,
             United States of America, without regard to the conflict of
             laws and principles thereof.

         e.  The terms of this Agreement shall be regarded by the Parties
             as confidential and shall not be disclosed by either Party
             publicly or to third parties (other than Veritel, GII and
             their respective Affiliates) without the written consent of
             the other Party, provided however that disclosure may be made
             if required by law or compliance with regulatory requirements.

         f.  Alcor shall promptly notify the Strategic Council in writing
             of a material breach or default of the Marketing, Supply and
             Service Agreement, the Purchase and Sales Commission Agreement
             and the Sintez Guaranty when it learns of such an event and
             the steps it is taking to minimize losses resulting therefrom.
             Alcor shall advise the Council of the rights and remedies
             available to it to seek recovery for such costs, expenses and
             losses. Any course of action to seek or not seek recovery
             shall be approved by the Council.

         g.  Notwithstanding anything to the contrary in this Agreement,
             the Parties agree and acknowledge that in the event of a
             breach of by a Party of any payment obligation to the
             non-breaching Party under this Agreement, the non-breaching
             Party may set off all or any portion of monies payable to the
             breaching Party by the non-breaching Party against the
             breached payment obligation of the breaching Party.

                                    * * * * *

                                     - 17 -

<PAGE>

         IN WITNESS WHEREOF, each Party has caused this Agreement to be executed
by a duly authorized representative effective as of the date first above
written.

                          ALCOR CHEMIE VERTRIEBS AG

                          By:      /s/ D.J. Kerrison
                                  -------------------------------------
                                   Name: D.J. Kerrison
                                   Title:

                          Date:    December 5, 2001
                                  -------------------------------------

                          ALCOR CHEMIE AG

                          By:      /s/ D.J. Kerrison
                                  -------------------------------------
                                   Name: D.J. Kerrison
                                   Title:

                          Date:    December 5, 2001
                                  -------------------------------------

                          NOOFOT GMBH

                          By:      /s/ Nigel Seddon
                                  -------------------------------------
                                   Name:  Nigel Seddon
                                   Title: Director

                          Date:    December 5, 2001
                                  -------------------------------------

                          ETHYL SERVICES GMBH

                          By:      /s/ Trevor Gigg
                                  -------------------------------------
                                   Name: Trevor Gigg
                                   Title:

                          Date:    December 11, 2001
                                  -------------------------------------

                                       18

<PAGE>

                                   SCHEDULE A

                     Strategic Council Rules and Procedures

Council Membership. The Council shall be composed of six members. Each Party
shall in its sole discretion appoint three members to serve as its
representatives on the Council. Each Party shall have the right to appoint a new
representative to replace a position on the Council previously appointed by that
Party which becomes vacant for any reason. Each Party may in its sole discretion
remove and/or appoint a substitute representative to a Council position
appointed by that Party. The appointment shall be effective upon delivery of
written notice to the other Party and members of the Council of such
appointment.

                                    * * * * *

                                  Schedule A-1

<PAGE>

                                   SCHEDULE B

                         Agreement Proceeds Calculation

                                  Schedule B-1

<PAGE>

                                   SCHEDULE C

                                    Services

         The Parties agree that in order to capture the cost synergies and
efficiencies that will be generated by implementing this Agreement that the
Services provided by the Parties pursuant to this Agreement be rendered in an
efficient and cost-effective manner. Each Party agrees that it will continue to
examine and implement methods of reducing cost in providing the Services during
the term of this Agreement.

         A.       ALCOR SERVICES. The description of the Services to be rendered
                  pursuant to this Agreement by or on behalf of Alcor by Veritel
                  or GII pursuant to the Marketing, Supply and Service Agreement
                  and the Purchase and Sales Commission Agreement are set forth
                  in Section A of this Schedule C and are made a part hereof.
                  Each of the Alcor Services shall be rendered by one or more of
                  Alcor and its Affiliates.

         B.       ETHYL  SERVICES.  The description of the Services to be
                  rendered by Ethyl pursuant to this Agreement are set forth in
                  Section B of this  Schedule C and are made a part  hereof.
                  Each of the Ethyl  Services  shall be  rendered by one or
                  more of Ethyl and its Affiliates.

         The Parties agree that out of proceeds collected by one or more of
Alcor and its Affiliates and designees pursuant to this Agreement that the
Parties shall be compensated for Alcor Services and Ethyl Services,
respectively, rendered by each Party in accordance with Paragraphs 12 and 13 of
this Agreement.

         Each Party shall invoice monthly for Services rendered pursuant to this
Agreement and payment shall be made to Ethyl in accordance with Paragraph 13 of
the Agreement.

                                  Schedule C-1

<PAGE>

                                   SCHEDULE D

                                  Schedule D-1

                                Working Capital

<PAGE>

                                  EXHIBIT D(i)

                                 Exhibit D(i)-1

Determination of Working Capital Requirements and Cash Settlement of Alcor and
Ethyl's Alliance Expenses

<PAGE>

                                   SCHEDULE E

                          Dispute Resolution Procedure

1.       Resolution of Legal Disputes.

         With the exception of disputes arising out of a deadlock in the vote of
the Council concerning a business issue within the Council's authority, any
dispute, controversy or claim arising out of or relating to this Agreement,
shall be finally determined by arbitration in accordance with the Rules of
Arbitration of the LCIA in London, England, provided that the Parties have been
unable to reach a satisfactory resolution through negotiation and mediation
under the procedures set forth below.

         1.1      Negotiation.
                  -----------

                  Before proceeding to mediation or arbitration, the Parties
         shall attempt in good faith to resolve any such dispute promptly by
         negotiation between senior executives of the respective Parties. Within
         25 days of the delivery by one Party to the other Party of a written
         notice of a dispute, controversy or claim, the receiving Party shall
         submit to the claiming Party a written response. The notice and
         response shall include: (1) a short statement of each Party's position
         and a summary of reasons supporting that position; and (2) the name and
         position of the executive who will represent the Party and any other
         person who will accompany the executive in negotiations and include a
         schedule of the availability of said executive. Within 45 days after
         delivery of the notice of dispute, the senior executives of both
         Parties shall meet at a mutually agreeable time and place, and
         thereafter for so long as they mutually agree, for negotiations in an
         attempt to resolve the dispute through agreement. All negotiations
         pursuant to this clause will be treated as confidential and shall be
         treated as compromise and settlement discussions for purposes of
         applicable rules of confidentiality, evidence and professional secrecy.

         1.2      Mediation.
                  ---------

                  Either Party may request the services of a mediator to aid the
         senior executives in resolving the dispute. Unless the Parties
         otherwise agree, the selection of a mediator shall be made by the
         Centre for Dispute Resolution ("CEDR") in London, England, and CEDR
         procedures shall govern the mediation. The Parties and the mediator
         shall meet within 20 days after the date that the mediator is appointed
         to begin settlement discussions with the assistance of the mediator.
         The mediation process shall continue thereafter as long as both Parties
         agree.

         1.3      Arbitration.
                  -----------

                  If the Parties have been unsuccessful in resolving a dispute
         under this section through negotiation, either Party may commence
         binding arbitration of such dispute in accordance with the Rules of the
         LCIA as follows:

                                  Schedule E-1

<PAGE>

                  1.3.1    Unless the Parties agree on a single arbitrator, the
                           arbitral tribunal shall consist of three members;
                           each Party shall select one arbitrator and the LCIA
                           shall select the third arbitrator who shall be
                           knowledgeable concerning the subject matter of the
                           dispute. Each Party may submit to the LCIA for its
                           consideration in making the selection of the third
                           arbitrator the qualifications, knowledge and
                           experience that the Party requests to be considered
                           in said appointment.

                  1.3.2    The place of the arbitration shall be London,
                           England.

                  1.3.3    The language of the arbitration shall be English.

                  1.3.4    The arbitral tribunal shall have the authority to
                           award all forms of relief determined to be just and
                           equitable; provided, however, that the tribunal shall
                           have no authority to award punitive or exemplary
                           damages, or any other damages not measured by the
                           prevailing Party's actual damages.

                  1.3.5    Any arbitral award entered by the tribunal shall be
                           final and binding on the Parties and may be enforced
                           in any court of competent jurisdiction.

2.       Resolution of Strategic Council Deadlock.

         Where there is a deadlock in the vote of the Council by reason of a tie
vote among its members concerning a business issue within its authority, any
member of the Council who has voted on the issue may initiate the following
dispute resolution procedures:

         2.1      Unless otherwise agreed by a majority of the Council, the
                  deadlocked issue shall be first be raised and discussed at a
                  special meeting of the Council called within 30 days in an
                  attempt to resolve the deadlock through negotiation
                  satisfactory to a majority of all of the members of the
                  Council.

         2.2      If the Council vote on the issue remains deadlocked after
                  discussion and negotiation at the second meeting of the
                  Council, either Party may request the services of a mediator
                  to aid the Parties in resolving the deadlocked issue. Should
                  there be no agreement on the identification of a suitable
                  mediator, the appointing authority for selection of a mediator
                  shall be made by the CEDR after consultation with each Party
                  as to the qualifications, knowledge and experience that a
                  mediator should have. Within 45 days from the second Council
                  meeting, the members of the Council shall meet with the
                  assistance of the mediator and, under CEDR procedures, seek to
                  resolve the dispute in a way which is satisfactory to a
                  majority of all the members of the Council. These mediation
                  meetings shall be confidential and shall last for so long as a
                  majority of the Council determines that such meetings are be
                  helpful in resolving the business dispute.

                                  Schedule E-2

<PAGE>

         2.3      If such issue remains deadlocked after undergoing the
                  mediation process described in Paragraph 2.2 of this Schedule
                  E to this Agreement, the issue shall be finally resolved by
                  binding arbitration as follows:

         2.3.1    Resolution of such issue shall be referred to arbitration in
                  London, England, under the Rules of Arbitration of the LCIA.

         2.3.2    Unless the Parties agree on a single arbitrator, the arbitral
                  tribunal shall consist of three members, each Party to select
                  one arbitrator and the two arbitrators to select the third
                  arbitrator who will serve as Chairman. In the event that the
                  two arbitrators are unable to agree on the appointment of the
                  third arbitrator, the appointment shall be made in accordance
                  with the LCIA Rules. The Chairman need not be a lawyer but
                  should be knowledgeable concerning the business issue which
                  has resulted in a deadlock. Each Party may submit to the LCIA
                  for its consideration in making the selection of the third
                  arbitrator the qualifications, knowledge and experience that
                  the Party requests to be considered in said appointment.

         2.3.3    As part of its final submission to the arbitral tribunal, each
                  Party shall make a specific proposal to resolve the business
                  issue that is the subject of the arbitration. The power of the
                  arbitral tribunal to render an award shall be limited to
                  adopting one of the specific proposals submitted by the
                  Parties.

         2.3.4    The position adopted by the arbitral tribunal shall be
                  accepted as the action of the Council under this Agreement.

         2.3.5    In arriving at its award the arbitral tribunal shall take into
                  account the following factors:

                  2.3.5.1  Alcor's need in the context of the global
                           business requirements of Octel Corp. to
                           manage the production decline and eventual
                           closing of its AK manufacturing facilities
                           on a long term, cost effective basis as
                           worldwide demand for Product declines.

                  2.3.5.2  The ultimate goal of the Parties is to
                           operate under this Agreement in a way which
                           maximizes long-term profitability for both
                           Parties in marketing Product to customers
                           for use in the Territory.

                  2.3.5.3  The goal of the Parties is to reduce the
                           overall costs of providing services under
                           this Agreement in safely and efficiently
                           marketing and distributing Product in the
                           Territory.

                                  Schedule E-3

<PAGE>

3.       Time Is of the Essence

         Each Party agrees that time is of the essence in resolving legal
disputes and Council deadlocks. Each Party shall fully cooperate to avoid
unnecessary delay in reaching resolution of these matters. Neither Party shall
be required to post security by way of a bank guarantee or other collateral to
initiate a resolution of a dispute under the provisions of this dispute
resolution procedure other than for the administrative costs of proceeding with
the dispute resolution process.

                                    * * * * *

                                  Schedule E-4

<PAGE>

                                   SCHEDULE F

                                    Insurance

1.       Insurance of Employees and Facilities
         -------------------------------------

                  a.       Alcor will effect, and at all times maintain during
                           the term of this Agreement and for so long as any
                           liabilities may arise thereunder, Employers'
                           Liability Insurance to a minimum level required by
                           applicable law, and in any event in an amount of not
                           less than         per occurrence and where applicable
                           Workman's Compensation Act Insurance in respect of
                           each employee provided by Alcor who performs any
                           duties in connection with this Agreement.

                  b.       Ethyl will effect, and at all times maintain during
                           the term of this Agreement and for so long as any
                           liabilities may arise thereunder, Employers'
                           Liability Insurance to a minimum level required by
                           applicable law, and in any event in an amount of not
                           less than         per occurrence and where applicable
                           Workman's Compensation Act Insurance in respect of
                           each employee provided by Ethyl who performs any
                           duties in connection with this Agreement.

                  c.       Alcor will effect and at all times maintain during
                           the term of this Agreement All Risks usually insured
                           in respect of (including Flood, Quake and Engineering
                           Risks) Property Damage Coverage with the property
                           valued at Full Replacement Cost on the Alcor
                           Affiliate Product manufacturing and related
                           facilities.

2.       Public and Product Liability
         ----------------------------

         Alcor and Ethyl will each effect and at all times maintain during the
         term of this Agreement, Public and Product Liability insurance in an
         aggregate amount of     (with a deductible amount as agreed between the
         Parties from time to time) with respect to any liabilities for which
         the Parties are responsible as provided in Paragraphs 16(c)(i), (ii),
         (iii) and (iv) of this Agreement. Each Party shall name the other Party
         as an additional insured under such insurance.

3.       Cargo Insurance
         ---------------

         Alcor shall effect in the joint names of Alcor and Ethyl, and at all
         times maintain during the term of this Agreement on mutually agreed
         terms and conditions, Bulk and Non-Bulk Cargo Insurance to cover
         shipments of Product to customers in the Territory pursuant to this
         Agreement. Non-Bulk insurance shall be placed on a CIF plus 10 percent
         plus value of containers basis. Bulk insurance shall be placed on a FOB
         value plus 10 percent, plus value of containers where applicable. Any
         deductible under such policies shall be borne by the Parties in the
         proportions set forth in Sections A-II and B-II of Schedule C to this

                                  Schedule F-1

<PAGE>

         Agreement (irrespective of the cause or reason that the Losses may have
         arisen and the fault of either Party in relation thereto).

4.       Contingent Non-Bulk Marine Cargo Liability
         ------------------------------------------

         Alcor shall effect in the joint names of Alcor and Ethyl, and at all
         times maintain during the term of this Agreement on mutually agreed
         terms and conditions, Contingent Non-Bulk Marine Cargo Insurance to
         cover Non-Bulk shipments of AK to customers in the Territory pursuant
         to this Agreement to an amount on conditions to be determined by Alcor.
         Any deductible under such policy shall be borne by the Parties in the
         proportions set forth in Sections A-II and B-II of Schedule C to this
         Agreement (irrespective of the cause or reason that the Losses may have
         arisen and the fault of either Party in relation thereto).

5.       Insurance Costs
         ---------------

         The portion of the cost of all insurance relating to Agreement
         Activities pursuant to Paragraphs 3 and 4 of Schedule F to this
         Agreement shall be included as an expense under Section A-I of Schedule
         C to this Agreement.

6.       Additional Insurance
         --------------------

                                  Schedule F-2

<PAGE>

                                   SCHEDULE G

                                  Schedule G-1

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