Document:

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                                                                    EXHIBIT 4.30
                                                                [EXECUTION COPY]

                               AMENDMENT AGREEMENT

     THIS  AMENDMENT  AGREEMENT,  dated as of August 3,  2000  (this  "Amendment
Agreement"),  is made by and among  DOLLAR  THRIFTY  AUTOMOTIVE  GROUP,  INC., a
Delaware  corporation  (the  "Parent"),  DOLLAR  RENT A CAR  SYSTEMS,  INC.,  an
Oklahoma  corporation  ("Dollar"),  THRIFTY RENT-A-CAR SYSTEM, INC., an Oklahoma
corporation  ("Thrifty," and, together with Dollar, the "Subsidiary  Borrowers";
the Parent and the Subsidiary Borrowers being collectively referred to herein as
the  "Borrowers"),  the various financial  institutions  which are identified as
"Continuing   Lenders"  on  the  signature  pages  hereof   (collectively,   the
"Continuing  Lenders"),  the various financial institutions which are identified
as  "Non-Continuing  Lenders" on the signature pages hereof  (collectively,  the
"Non-Continuing   Lenders"  and,  together  with  the  Continuing  Lenders,  the
"Existing Lenders"),  the various financial institutions which are identified as
"New Lenders" on the signature  pages hereof  (collectively,  the "New Lenders",
and, together with the Continuing Lenders,  the "Lenders"),  CREDIT SUISSE FIRST
BOSTON  ("Credit  Suisse First Boston"),  as the  administrative  agent (in such
capacity, the "Administrative  Agent") for the Lenders, THE CHASE MANHATTAN BANK
("Chase"),  as the syndication agent (in such capacity, the "Syndication Agent")
and, together with the  Administrative  Agent, the "Agents") for the Lenders and
CREDIT SUISSE FIRST BOSTON and CHASE  SECURITIES  INC. as the  co-arrangers  (in
such capacities, the "Arrangers").

                              W I T N E S S E T H:

     WHEREAS, the Borrowers, the Existing Lenders, the Administrative Agent, the
Syndication Agent and the Arrangers are parties to a Credit Agreement,  dated as
of  December  23,  1997  (as  amended  and in  effect  immediately  prior to the
Amendment Effective Date, the "Original Credit Agreement", and together with all
of the Loan Documents (as defined therein and in effect immediately prior to the
Amendment Effective Date), the "Original Loan Documents");

     WHEREAS,  the Borrowers have requested that the Existing  Lenders amend and
restate the Original  Credit  Agreement  and certain of the other  Original Loan
Documents, all as provided in the Amended and Restated Credit Agreement attached
hereto as Annex I; and

     WHEREAS, (a) each Existing Lender desires, concurrently with the Assignment
and Assumption,  to sell and assign all of its rights and obligations  under the
Original  Credit  Agreement  and  each  other  Original  Loan  Document  to each
Continuing  Lender and New Lender  and (b) each such  Continuing  Lender and New
Lender  desires to  purchase  and assume  from each such  Existing  Lender  such
portion of such rights and obligations in accordance with the terms hereof; and

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

                                    ARTICLE I

                                   DEFINITIONS

     SECTION 1.1.  Certain  Definitions.  The  following  terms  (whether or not
underscored)  when used in this  Amendment  Agreement  shall have the  following
meanings  (such  meanings to be equally  applicable  to the  singular and plural
forms thereof):

         "Administrative Agent" is defined in the preamble.

         "Agents" is defined in the preamble.
          ------                    --------

         "Amended and Restated Credit Agreement" is defined in Section 2.1.
          -------------------------------------                -----------

         "Amendment Agreement" is defined in the preamble.

         "Amendment Effective Date" is defined in Section 3.1.

         "Arrangers" are defined in the preamble.
          ---------                     --------

         "Borrowers" are defined in the preamble.
          ---------                     --------

         "Chase" are defined in the preamble.
          -----                     --------

         "Continuing Lenders" is defined in the preamble.

         "Credit Suisse First Boston" is defined in the preamble.

         "Dollar" is defined in the preamble.
          ------                    --------

         "Existing Lenders" is defined in the preamble.

         "Lenders" is defined in the preamble.
          -------                    --------

         "New Lenders" is defined in the preamble.

         "Non-Continuing Lenders" is defined in the preamble.

                                                         2

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         "Original Credit Agreement" is defined in the first recital.

         "Original Loan Documents" is defined in the first recital.

         "Original Security Documents" is defined in Section 4.5.

         "Parent" is defined in the preamble.
          ------                    --------

         "Subsidiary Borrowers" are defined in the preamble.

         "Syndication Agent" are defined in the preamble.

         "Thrifty" is defined in the preamble.
          -------                    --------

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

                                   ARTICLE II

                           AMENDMENT AND RESTATEMENT;
                       LENDER ASSIGNMENTS AND ASSUMPTIONS

     SECTION 2.1.  Amendment and  Restatement.  Effective on (and subject to the
occurrence  of) the  Amendment  Effective  Date and  immediately  following  the
assignments  and  assumptions  being effected  pursuant to Section  2.2(a),  the
Original  Credit  Agreement  (including  Exhibits  A, D and K and all  Schedules
(other than Schedule II) thereto) shall be and is hereby amended and restated to
read in its  entirety as set forth in Annex I hereto (as set forth in such Annex
I, the "Amended and Restated Credit Agreement"),  and as so amended and restated
is hereby ratified, approved and confirmed in each and every respect. The rights
and obligations of the parties to the Original Credit  Agreement with respect to
the period prior to the Amendment  Effective  Date shall not be affected by such
amendment and restatement.

     SECTION 2.2. Lender Assignments and Assumptions.
                  ------ ----------- --- ------------

          (a)  Assignments  and  Assumptions.  Effective  on (and subject to the
     occurrence of) the Amendment  Effective Date and  immediately  prior to the
     amendment  and  restatement  of the Original  Credit  Agreement  (including
     Exhibits A, D and K and all  Schedules  (other than  Schedule  II) thereto)
     being  effected  pursuant  to Section  2.1,  each  Existing  Lender  hereby
     irrevocably  sells,  transfers,  conveys  and  assigns,  without  recourse,
     representation or warranty (except as expressly set forth herein),  to each
     Continuing  Lender and each New Lender and each such Continuing  Lender and
     such New Lender hereby irrevocably purchases and assumes from

                                                         3

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     such  Existing  Lender all of the rights and  obligations  of such Existing
     Lender under the Original  Credit  Agreement  and each other  Original Loan
     Document  such that after giving  effect to the  foregoing  assignment  and
     delegation, each such Continuing Lender's and such New Lender's Percentages
     for the purposes of the Original Credit  Agreement and each such other Loan
     Document  (and  following the  amendment  and  restatement  of the Original
     Credit  Agreement  pursuant to Section 2.1, for the purposes of the Amended
     and Restated Credit  Agreement and the other Loan Documents) will be as set
     forth opposite such Person's name under the column heading "New Percentage"
     in Schedule I hereto.

          (b)   Additional Provisions for Assignments and Assumptions.
                ---------- ---------- --- ----------- --- -----------

                    (i) Each New Lender  confirms  and agrees that in becoming a
               Lender and in making its Commitments and Loans under the Original
               Credit  Agreement (and following the amendment and restatement of
               the  Original  Credit  Agreement  pursuant  to Section  2.1,  the
               Amended and  Restated  Credit  Agreement),  such actions have and
               will be made without recourse to, or  representation  or warranty
               by any Agent.

                    (ii) Each  Existing  Lender  and New Lender  represents  and
               warrants that it is legally  authorized to enter into and deliver
               this  Amendment  Agreement  and  that  this  Amendment  Agreement
               constitutes a legal, valid and binding obligation of such Person.

                    (iii) Each  Existing  Lender  confirms and agrees that it is
               the legal and  beneficial  owner of such  rights and  obligations
               that it is assigning  pursuant to Section 2.1(a),  free and clear
               of any adverse  claim  created by it.  Except as set forth in the
               preceding sentence,  such Existing Lender makes no representation
               or warranty  and assumes no  responsibility  with  respect to any
               statements,  warranties or representations made pursuant to or in
               connection  with  this  agreement,  or the  execution,  legality,
               validity,  enforceability,  genuineness,  sufficiency or value of
               the Original Credit Agreement or any other Original Loan Document
               or any other instrument or document  furnished pursuant hereto or
               thereto,  including the financial  condition of the Parent or any
               of its  Subsidiaries  or the  performance  or  observance  by any
               Obligor  or  any  Lender  of any of  its  obligations  under  the
               Original  Credit  Agreement,  any other Original Loan Document or
               any other  instrument or document  furnished  pursuant  hereto or
               thereto.

                    (iv) Each Continuing  Lender and each New Lender  represents
               and warrants and confirms that it has received copies of the most
               recent financial  statements delivered pursuant to Section 3.7 of
               this Amendment Agreement and such other documents and information
               as it has deemed  appropriate to make its own credit analysis and
               decision  to  enter  into  this  agreement.   In  addition,  each
               Continuing Lender and each New Lender,  independently and without
               reliance upon any Existing Lender, any other Lender or Agent, and
               based  on  such  documents  and  information  as  it  shall  deem
               appropriate  at the time,  shall  continue to make its own credit
               decisions in taking or not taking action under the

                                                         4

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               Amended and Restated Credit  Agreement,  the other Loan Documents
               and the other  instruments and documents  delivered in connection
               therewith.

                    (v)   Immediately   following  all  such   assignments   and
               assumptions   effected   pursuant   to   Section   2.2(a),   each
               Non-Continuing   Lender  shall  be  released   from  all  of  its
               obligations  under the Original  Credit  Agreement  and the other
               Original Loan Documents.

          (c) Waiver of Administrative  Agent Processing Fee. The Administrative
     Agent hereby agrees to waive receipt of the payment of the processing  fees
     set forth in Section 12.11.1 of the Original Credit Agreement in respect of
     the assignments effected under clause (a) above.

                                   ARTICLE III

                           CONDITIONS TO EFFECTIVENESS

     SECTION 3.1. Amendment  Effective Date. This Amendment  Agreement,  and the
amendments,  modifications and assignments set forth herein, shall be and become
effective  on the  date  (the  "Amendment  Effective  Date")  when  each  of the
conditions  set forth in this  Article  III shall  have  been  fulfilled  to the
satisfaction of the Administrative Agent on or before August 15, 2000.

     SECTION 3.2. Resolutions, etc. The Administrative Agent shall have received
from each  Borrower and each other  Obligor a  certificate,  dated the Amendment
Effective Date, of the Secretary or Assistant Secretary of such Person as to

          (a)  resolutions  of its  Board of  Directors  then in full  force and
     effect  authorizing  the  execution,   delivery  and  performance  of  this
     Amendment Agreement,  the Amended and Restated Credit Agreement,  the Notes
     and each other Loan Document to be executed by it;

          (b) the incumbency and signatures of those of its officers  authorized
     to act with respect to this Amendment  Agreement,  the Amended and Restated
     Credit  Agreement,  the Notes and each other Loan Document  executed by it;
     and

          (c)  the  full force and  validity  of each  Organic  Document of such
     Person and true and complete copies thereof,

upon which certificate each Lender, the Issuer and the Administrative  Agent may
conclusively  rely until it shall have  received  a further  certificate  of the
Secretary of such  Borrower or such other  Obligor  canceling  or amending  such
prior certificate.

                                                         5

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     SECTION 3.3. Execution of Counterparts. The Administrative Agent shall have
received  counterparts of this Amendment Agreement,  duly executed and delivered
on behalf of each of the Borrowers,  each Continuing Lender, each Non-Continuing
Lender and each New Lender.

     SECTION 3.4.  Execution of the Amended and Restated Credit  Agreement.  The
Administrative  Agent  shall  have  received  counterparts  of the  Amended  and
Restated Credit Agreement,  duly executed and delivered on behalf of each of the
Borrowers and each Lender.

     SECTION  3.5.  Delivery  of Notes.  The  Administrative  Agent  shall  have
received,  for the  account  of each  Lender  that  requests  that its  Loans be
evidenced by a Note, its Note duly executed and delivered by the Borrower.

     SECTION 3.6.  Payment of Loans,  Commitment  Fees and Letter of Credit Fees
under the  Original  Credit  Agreement.  All Loans (as  defined in the  Original
Credit  Agreement),  if any,  shall  have  been  prepaid  in full in cash to the
Administrative  Agent for the pro rata  account of, and to the extent  received,
shall have paid to, each Existing Lender, together with any interest thereon and
all other  amounts  accrued  but  unpaid  under the  Original  Credit  Agreement
(including  commitment  fees and letter of credit  fees due under  Section  3.3)
(whether or not due on the Amendment Effective Date).

     SECTION 3.7. Delivery of Financial Statements;  Business Plan; Projections.
                  -------- -- --------- -----------  -------- ----- ------------
The Administrative Agent shall have received

          (a) audited  consolidated  financial  statements for each of the three
     Fiscal Years in the  three-Fiscal-Year  period ending  December 31, 1999 of
     each  of  (i)  the  Parent  and  its  Subsidiaries,  (ii)  Dollar  and  its
     Subsidiaries and (iii) Thrifty and its Subsidiaries;

          (b) unaudited interim consolidated financial statements for the Fiscal
     Quarter  period  ending  March  31,  2000  of each  of the  Parent  and its
     Subsidiaries;

          (c) a business  plan for the 2000  through  2005 Fiscal  Years for the
     Parent and its  Subsidiaries in form and scope  reasonably  satisfactory to
     the Administrative Agent; and

          (d) financial  projections  for the period from January 1, 2000 to the
     Stated Maturity Date for the Parent and its  Subsidiaries in form and scope
     reasonably satisfactory to the Administrative Agent.

     SECTION 3.8. Consents,  etc. All governmental and third party approvals and
consents  necessary in  connection  with the amendment  and  restatement  of the
Original  Credit  Agreement  in the  form  of  Annex  I  hereto  and  the  other
transactions  contemplated  hereby  and  by  the  Amended  and  Restated  Credit
Agreement (including the execution and delivery of this Amendment Agreement, the
Amended and Restated Credit Agreement and each other Loan

                                                         6

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Document by each  Obligor or party hereto and thereto and their  performance  of
their respective Obligations hereunder and thereunder) and continuing operations
of the Parent and its  Subsidiaries  (after  giving  effect to the amendment and
restatement of the Original  Credit  Agreement in the form of Annex I hereto and
the other  transactions  contemplated  hereby and by the  Amended  and  Restated
Credit Agreement) shall have been obtained and be in full force and effect (and,
to the extent requested by the Administrative  Agent, the  Administrative  Agent
shall have received true and correct  copies of such approvals and consents) and
all applicable waiting periods shall have expired without any action being taken
or  threatened  by any  competent  authority  which would  restrain,  prevent or
otherwise  impose  adverse  conditions  on  any  aspect  of  the  amendment  and
restatement of the Original  Credit  Agreement in the form of Annex I hereto and
the other  transactions  contemplated  hereby and by the  Amended  and  Restated
Credit Agreement.

     SECTION 3.9. Amendment Effective Date Certificate. The Administrative Agent
shall have received,  with counterparts for each Lender, the Amendment Effective
Date  Certificate,  dated  the  date of the  Amendment  Effective  Date and duly
executed  and  delivered by an  Authorized  Officer of each  Borrower,  in which
certificate  such Borrower shall agree and acknowledge  that the statements made
therein shall be deemed to be true and correct representations and warranties of
such  Borrower  made as of such  date,  and,  at the time  such  certificate  is
delivered,  such statements shall in fact be true and correct. All documents and
agreements  required to be appended to the Amendment  Effective Date Certificate
shall be in form and substance  reasonably  satisfactory  to the  Administrative
Agent.

     SECTION 3.10. No Material  Adverse Change.  There shall not have occurred a
material  adverse  change  in  the  business,   operations,   property,  assets,
liabilities,  condition  (financial or otherwise) or prospects of the Parent and
its Subsidiaries, taken as a whole, since December 31, 1999.

     SECTION  3.11.  Mortgages.  The  Administrative  Agent shall have  received
counterparts  of an  amendment,  in  form  and  substance  satisfactory  to  the
Administrative  Agent  and dated as of the  Amendment  Effective  Date,  to each
existing Mortgage, duly executed by the applicable Borrower or Subsidiary having
rights in the property described in such Mortgage, together with

          (a) evidence of the completion (or  satisfactory  arrangements for the
     completion)  of all recordings and filings of each such amendment as may be
     necessary  or,  in the  reasonable  opinion  of the  Administrative  Agent,
     desirable to continue a valid,  perfected  first  priority Lien against the
     land and improvements purported to be covered thereby;

          (b) endorsements to mortgagee's  title insurance  policies in favor of
     the  Administrative  Agent and the Lenders  issued by  insurers  reasonably
     satisfactory  to the  Administrative  Agent,  in  amounts  and in form  and
     substance reasonably satisfactory to the Administrative Agent, with respect
     to each  Existing  Material  Property  purported to be covered by each such
     Mortgage, insuring that title to such property is marketable and that

                                                         7

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     the interests  created by the Mortgage  continue to constitute  valid first
     Liens thereon free and clear of all defects and encumbrances  other than as
     approved by the  Administrative  Agent and shall be accompanied by evidence
     of the payment in full of all additional premiums, if any, thereon; and

          (c) such other certifications (including flood hazard certifications),
     certificates  (including insurance  certificates),  approvals,  opinions or
     documents as the Administrative Agent may reasonably request.

     SECTION 3.12.  Acknowledgment of Obligors.  The Administrative  Agent shall
have  received,   with   counterparts  for  each  Lender,   an  affirmation  and
acknowledgment, substantially in the form of Annex II, dated as of the Amendment
Effective  Date,  from each  Obligor  not  otherwise  a party to this  Amendment
Agreement  affirming its  obligations  under the Loan Documents to which it is a
party and  acknowledging  the amendment and  restatement of the Original  Credit
Agreement in the form of Annex I hereto and the other transactions  contemplated
hereby and by the Amended and Restated Credit  Agreement,  which affirmation and
acknowledgment  shall have been duly  executed and  delivered  by an  Authorized
Officer of each such Obligor.

     SECTION  3.13.  Opinions of Counsel.  The  Administrative  Agent shall have
received  opinions,  dated the  Amendment  Effective  Date and  addressed to the
Agents,  the Issuer and the  Lenders,  from (a)  Debevoise & Plimpton,  New York
counsel  for the  Obligors  and  Chrysler,  in  form  and  substance  reasonably
satisfactory to the Administrative Agent and (b) Hall, Estill, Hardwick,  Gable,
Golden &  Nelson,  Oklahoma  counsel  for the  Obligors,  in form and  substance
reasonably satisfactory to the Administrative Agent.

     SECTION 3.14. Fees, Expenses,  etc. (a) The Administrative Agent shall have
received  for its own  account  all fees,  costs and  expenses  due and  payable
pursuant to Sections 3.3 and 12.3 of the Amended and Restated Credit  Agreement,
to the extent then invoiced.

          (b) The  Administrative  Agent shall have received for the account of,
     and to the extent  received,  shall have paid to, each Lender an  amendment
     fee and an upfront  fee in the  amounts  respectively  set forth  under the
     column  headings  "Amendment  Fee" and "Upfront Fee" opposite such Lender's
     name on Schedule I hereto.

     SECTION 3.15.  Satisfactory Legal Form. All documents executed or submitted
pursuant  hereto  by or on  behalf of any  Borrower  or any of their  respective
Subsidiaries or any other Obligor shall be satisfactory in form and substance to
the Administrative  Agent and its counsel; and the Administrative Agent and such
counsel shall have received all information,  approvals,  opinions, documents or
instruments as the Administrative Agent or such counsel may reasonably request.

                                                         8

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                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

     In order to induce the Existing  Lenders,  the New Lenders,  the Issuer and
the Agents to enter into this  Amendment  Agreement and to amend and restate the
Original Credit Agreement (including all exhibits and schedules thereto) to read
in its entirety as set forth in Annex I hereto, each of the Borrowers represents
and  warrants  unto each Agent,  the Issuer,  each New Lender and each  Existing
Lender as set forth in this Article IV.

     SECTION  4.1.   Compliance  with   Representations   and  Warranties.   The
representations  and warranties set forth herein,  in Article VII of the Amended
and  Restated  Credit  Agreement  and in each other Loan  Document  delivered in
connection  with this  Amendment  Agreement,  the  Amended and  Restated  Credit
Agreement or the Original  Credit  Agreement  are true and correct with the same
effect as if made on and as of the Amendment  Effective  Date (unless  stated to
relate  solely  to an  earlier  date,  in which  case such  representations  and
warranties shall be true and correct as of such earlier date).

     SECTION  4.2. Due  Authorization,  Non-Contravention,  etc. The  execution,
delivery and  performance  by each  Borrower of this  Amendment  Agreement,  the
Amended and Restated  Credit  Agreement,  the Notes and each other Loan Document
executed or to be executed by it, and the execution, delivery and performance by
each other  Obligor of each Loan  Document  executed or to be executed by it and
each  such  Borrower's  and  each  such  other  Obligor's  participation  in the
amendment and restatement of the Original Credit  Agreement in the form of Annex
I hereto and the other transactions  contemplated  hereby and by the Amended and
Restated  Credit  Agreement  are  within  each  such  Borrower's  and each  such
Obligor's corporate powers, have been duly authorized by all necessary corporate
action, and do not

          (a)  contravene  such  Borrower's  or  such  other  Obligor's  Organic
     Documents;

          (b)  contravene   any  material   contractual   restriction,   law  or
     governmental  regulation  or court decree or order  binding on or affecting
     such Borrower or such other Obligor; or

          (c) result in, or require  the  creation  or  imposition  of, any Lien
     (other  than the Liens  created  under the Loan  Documents  in favor of the
     Administrative  Agent for the benefit of the Secured  Parties and the Liens
     created  under the Chrysler  Credit  Support  Documents  for the benefit of
     Chrysler) on any of such Borrower or such other Obligor's properties.

     SECTION  4.3.  Government  Approval,  Regulation,  etc.  Other  than  those
authorizations,  approvals or other  actions by, and notices to or filings with,
any  governmental  authority or regulatory  body,  if any,  which have been duly
obtained or made and are in full force and effect,

                                                         9

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no  additional  authorization  or approval or other action by, and no additional
notice to or filing with, any governmental authority or regulatory body or other
Person  is  required  for the due  execution,  delivery  or  performance  by any
Borrower  or any other  Obligor of this  Amendment  Agreement,  the  Amended and
Restated Credit Agreement, the Notes or any other Loan Document to which it is a
party,  or,  except  to the  extent  such  failure  to so  obtain  or make  such
authorizations,  approvals or other actions could not  reasonably be expected to
have an adverse  effect on the interests of the Lenders  hereunder and under the
Amended and Restated Credit Agreement and the other Loan Documents or a material
adverse  effect on the  business,  property,  operations,  assets,  liabilities,
condition   (financial  or  otherwise)  or  prospects  of  the  Parent  and  its
Subsidiaries,  taken  as a whole,  for  such  Borrower's  and  each  such  other
Obligor's  participation in the amendment and restatement of the Original Credit
Agreement in the form of Annex I hereto and the other transactions  contemplated
hereby  and by  Amended  and  Restated  Credit  Agreement  and  the  other  Loan
Documents.  No Borrower nor any of its  Subsidiaries is an "investment  company"
within the  meaning of the  Investment  Company Act of 1940,  as  amended,  or a
"holding  company",  or a  "subsidiary  company" of a "holding  company",  or an
"affiliate"  of a "holding  company" or of a "subsidiary  company" of a "holding
company",  within the meaning of the Public Utility Holding Company Act of 1935,
as amended.

     SECTION 4.4. Validity,  etc. This Amendment Agreement constitutes,  and the
Amended and Restated  Credit  Agreement,  the Notes and each other Loan Document
executed by each  Borrower  will,  on the due  execution  and delivery  thereof,
constitute,   the  legal,  valid  and  binding  obligations  of  such  Borrower,
enforceable against such Borrower in accordance with their respective terms; and
each Loan Document  executed  pursuant hereto by each other Obligor will, on the
due execution  and delivery  thereof by such  Obligor,  be the legal,  valid and
binding obligation of such Obligor, enforceable in accordance with its terms.

     SECTION 4.5.  Non-Impairment,  etc.  After giving effect to this  Amendment
Agreement,  neither the  modification  and  restatement  of the Original  Credit
Agreement  or any  other  Original  Loan  Document  effected  pursuant  to  this
Amendment Agreement nor the execution, delivery, performance or effectiveness of
this Amendment Agreement, the Amended and Restated Credit Agreement or any other
Loan  Document  impairs  the  validity,  effectiveness  or priority of the Liens
granted  pursuant to the Pledge  Agreement  and the Security  Agreement (as such
terms are defined in the Original Credit Agreement and as in effect  immediately
prior to the Amendment Effective Date, the "Original Security  Documents"),  and
such Liens continue unimpaired with the same priority to secure repayment of all
Obligations,  whether heretofore or hereafter incurred. Neither the modification
and  restatement  of the Original  Credit  Agreement or the other  Original Loan
Documents  effected  pursuant to this  Amendment  Agreement  nor the  execution,
delivery,  performance or effectiveness of this Amendment Agreement, the Amended
and Restated Credit  Agreement or any other Loan Document  requires that any new
filings be made or other action  taken to perfect or to maintain the  perfection
of such Liens.  Under the foregoing  circumstances,  the position of the Lenders
with respect to such Liens, the Collateral (as defined in the Original  Security
Documents)  in which a security  interest  was granted  pursuant to the Original
Security Documents,  and the ability of the Administrative Agent to realize upon
such Liens pursuant to

                                                        10

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the terms of the  Security  Agreement  and the  Pledge  Agreement  have not been
adversely  affected in any material  respect by the modification and restatement
of the Original Credit  Agreement or the other Original Loan Documents  effected
pursuant to this Amendment Agreement or by the execution,  delivery, performance
or  effectiveness of this Amendment  Agreement,  the Amended and Restated Credit
Agreement or any other Loan Document.

     SECTION 4.6. Compliance With Original Credit Agreement. As of the execution
and delivery of this Amendment Agreement and up to the Amendment Effective Date,
each Obligor is in  compliance  in all material  respects with all the terms and
conditions  of the  Original  Credit  Agreement  and  the  other  Original  Loan
Documents  to be observed or performed by it, and no Default has occurred and is
continuing.

                                    ARTICLE V

                            MISCELLANEOUS PROVISIONS

     SECTION 5.1. No Other Amendments; References to the Credit Agreement. Other
than as specifically provided herein or in the amendment of terms and conditions
of the Original Credit Agreement that are specifically  reflected in the Amended
and Restated Credit Agreement,  this Amendment  Agreement shall not operate as a
waiver or  amendment of any right,  power or  privilege  of any Existing  Lender
under the Original  Credit  Agreement or any other  Original Loan Document or of
any other  term or  condition  of the  Original  Credit  Agreement  or any other
Original Loan Document nor shall the entering into of this  Amendment  Agreement
preclude  the  Lenders  from  refusing  to enter  into any  further  waivers  or
amendments  with  respect to the  Amended and  Restated  Credit  Agreement.  All
references  to  the  Original  Credit  Agreement  in any  document,  instrument,
agreement,  or writing  shall  from and after the  Amendment  Effective  Date be
deemed to refer to the Amended and Restated  Credit  Agreement,  and, as used in
the Amended and Restated  Credit  Agreement,  the terms  "Agreement",  "herein",
"hereunder",  "hereto",  and words of similar import shall mean,  from and after
the Amendment Effective Date, the Amended and Restated Credit Agreement.

     SECTION  5.2.  Amendments  to  Existing  Enhancement  Letters of Credit and
Enhancement  Letter of Credit  Applications  and Agreements.  Each Lender hereby
agrees that the  Administrative  Agent,  the Issuer,  the Borrowers  and, to the
extent  applicable,  the  beneficiary of each  Enhancement  Letter of Credit may
amend or  otherwise  modify  (a) any  existing  Enhancement  Letter of Credit to
extend the Stated Expiry Date thereof to a date (such date as it relates to such
Enhancement  Letter of Credit,  the  "Extended  Stated  Expiry Date") that is no
later than the earlier of (i) three years from the date of such  extension,  and
(ii) the Commitment  Termination  Date in effect at the time of such  extension;
and (b) any existing  Enhancement  Letter of Credit Application and Agreement to
reduce the notice  periods  for  extensions  relating to  Enhancement  Letter of
Credit issued in connection  therewith to periods consistent with those relating
to increases to the Stated Amount of outstanding  Enhancement  Letters of Credit
as set

                                                        11

<PAGE>

forth in the second  proviso to the first sentence of Section 4.1 of the Amended
and Restated Credit Agreement.

     SECTION 5.3. Headings. The various headings of this Amendment Agreement are
                  ---------
inserted for convenience only and shall not affect the meaning or interpretation
of this or any other provisions hereof.

     SECTION 5.4.  Governing  Law.  THIS  AMENDMENT  AGREEMENT,  THE AMENDED AND
RESTATED CREDIT AGREEMENT,  THE NOTES AND EACH OTHER LOAN DOCUMENT SHALL EACH BE
DEEMED TO BE A CONTRACT  MADE UNDER AND GOVERNED BY THE LAWS OF THE STATE OF NEW
YORK.

     SECTION 5.5.  Counterparts.  This Amendment  Agreement may be signed in any
number of counterparts, each of which shall be an original, with the same effect
as if the signatures thereto and hereto were upon the same instrument.

     SECTION 5.6.  Cross-References.  References in this Amendment  Agreement to
any Article or Section are, unless otherwise  specified or otherwise required by
the context, to such Article or Section of this Amendment Agreement.

     SECTION 5.7.  Successors  and Assigns.  This Amendment  Agreement  shall be
                   ----------  --- --------
binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns.

                    [REMAINDER OF PAGE INTENTIONALLY OMITTED]

                                                        12

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment Agreement
to be executed by their  respective duly  authorized  officers as of the day and
year first above written.

DOLLAR THRIFTY AUTOMOTIVE GROUP, INC.

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

Address:      5330 East 31st Street
              Tulsa, OK 74135

Facsimile No.: (918) 669-2301

Attention:    Pamela S. Peck

DOLLAR RENT A CAR SYSTEMS, INC.

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

Address:      5330 East 31st Street
              Tulsa, OK 74135

Facsimile No.: (918) 669-3046

Attention:    Vicki J. Vaniman

                                                      S-1
                          1

<PAGE>

THRIFTY RENT-A-CAR SYSTEM, INC.

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

Address:      5310 East 31st Street
              Tulsa, OK 74135

Facsimile No.: (918) 669-2596

Attention:    Randall J. Holder

CREDIT SUISSE FIRST BOSTON, as the
     Administrative Agent and as an Arranger

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

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

Address:      Eleven Madison Avenue
              13th Floor
              New York, NY  10010-3629

Facsimile No.:  (212) 325-8304

Attention:    Andrea Chicas

                                                      S-2
                          2

<PAGE>

CREDIT SUISSE FIRST BOSTON, as
     Issuer

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

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

THE CHASE MANHATTAN BANK, as
     the Syndication Agent

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

Address:

Facsimile No.:

Attention:

CHASE SECURITIES INC., as
     an Arranger

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

Address:

Facsimile No.:

Attention:

                                                      S-3
                          3

<PAGE>

CONTINUING LENDERS:
------------------

CREDIT SUISSE FIRST BOSTON

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

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

                                                      S-4
                          4

<PAGE>

THE CHASE MANHATTAN BANK

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

                                                      S-5
                          5

<PAGE>

BANK OF OKLAHOMA, NATIONAL
    ASSOCIATION

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

                                                      S-6
                          6

<PAGE>

MIDFIRST BANK

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

                                                      S-7
                          7

<PAGE>

TEXTRON FINANCIAL CORPORATION

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

                                                      S-8
                          8

<PAGE>

DRESDNER BANK AG, NEW YORK
    AND GRAND CAYMAN BRANCHES

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

                                                      S-9
                          9

<PAGE>

LOCAL OKLAHOMA BANK

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

                                                      S-10
                         10

<PAGE>

BANK OF TOKYO - MITSUBISHI
    TRUST COMPANY

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

                                                      S-11
                         11

<PAGE>

ARVEST STATE BANK

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

                                                      S-12
                         12

<PAGE>

NON-CONTINUING LENDERS:
----------------------

BANK OF HAWAII

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

                                                      S-13
                         13

<PAGE>

BANK POLSKA KASA OPIEKE S.A. -
    PEKAO S.A. GROUP, NEW YORK
    BRANCH

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

                                                      S-14
                         14

<PAGE>

THE FUJI BANK, LIMITED

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

                                                      S-15
                         15

<PAGE>

MORGAN GUARANTY TRUST
    COMPANY OF NEW YORK

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

                                                      S-16
                         16

<PAGE>

SOUTHERN PACIFIC BANK

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

                                                      S-17
                         17

<PAGE>

ASSIGNEE LENDERS:
----------------

THE BANK OF NOVA SCOTIA

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

                                                      S-18
                         18

<PAGE>

DEUTSCHE BANK AG, NEW YORK
    BRANCH AND/OR CAYMAN
     ISLANDS BRANCH

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

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

                                                      S-19
                         19

<PAGE>

<TABLE>
<CAPTION>

                                                                                                         SCHEDULE I

                                               PERCENTAGES AND FEES

   Name of Institution           Existing Percentage       New Percentage       Amendment Fee         Upfront Fee
   -------------------           -------------------       --------------       -------------         -----------
<S>                                <C>                     <C>                  <C>                    <C>
Credit Suisse First Boston         15.3488372093%          16.7441860465%       $   41,250.00          $ 7,500.00
Chase Manhattan Bank               15.8139534884%          15.8139534884%           42,500.00                0.00
Bank of Oklahoma                   11.6279069767%          11.6279069767%           31,250.00                0.00
Deutsche Bank AG                    0.0000000000%          11.6279069767%                0.00           62,500.00
Bank of Tokyo-Mitsubishi            4.6511627907%           9.3023255814%           12,500.00           20,000.00
Dresdner Bank                       6.9767441860%           6.9767441860%           18,750.00                0.00
Local Oklahoma Bank                 6.9767441860%           6.9767441860%           18,750.00                0.00
Midfirst Bank                       4.6511627907%           6.9767441860%           12,500.00            7,500.00
Bank of Nova Scotia                 0.0000000000%           4.6511627907%                0.00           15,000.00
Arvest State Bank                   3.7209302326%           4.6511627907%           10,000.00            3,000.00
Textron Financial Corp.             2.3255813953%           4.6511627907%            6,250.00            7,500.00
Bank of Hawaii                      6.9767441860%           0.0000000000%                0.00                0.00
Bank Polska Kasa                    2.3255813953%           0.0000000000%                0.00                0.00
Fuji Bank                           9.3023255814%           0.0000000000%                0.00                0.00

</TABLE>

                                              S-20
                                                20

<PAGE>

<TABLE>
<CAPTION>

<S>                                 <C>                      <C>                          <C>                <C>
Morgan Guaranty Trust Co.           4.6511627907%            0.0000000000%                0.00               0.00
Southern Pacific Bank               4.6511627907%            0.0000000000%                0.00               0.00
TOTAL                             100.0000000000%          100.0000000000%          193,750.00        $123,000.00
</TABLE>

                                                      S-1
                                                         1

<PAGE>

                                                      S-2
                                                        -2-<PAGE>

                                                                    EXHIBIT 4.31

                                SUPPLEMENT NO. 6

                                       TO

                            SERIES 1998-1 SUPPLEMENT

                           dated as of August 31, 2000

                                      among

                            RENTAL CAR FINANCE CORP.,

                        DOLLAR RENT A CAR SYSTEMS, INC.,

                        THRIFTY RENT-A-CAR SYSTEM, INC.,

                     DOLLAR THRIFTY AUTOMOTIVE GROUP, INC.,

                             BANKERS TRUST COMPANY,
                        as Trustee and Enhancement Agent

                  CREDIT SUISSE FIRST BOSTON, NEW YORK BRANCH,
                 as the Series 1998-1 Letter of Credit Provider

                                       and

                          DOLLAR THRIFTY FUNDING CORP.,
                      as the sole Series 1998-1 Noteholder

<PAGE>

                                SUPPLEMENT NO. 6
                           TO SERIES 1998-1 SUPPLEMENT

     This  Supplement No. 6 to Series 1998-1  Supplement  dated as of August 31,
2000  ("Supplement  No.  6"),  among  Rental  Car  Finance  Corp.,  an  Oklahoma
corporation ("RCFC"),  Dollar Rent A Car Systems,  Inc., an Oklahoma corporation
("Dollar"),   Thrifty   Rent-A-Car   System,   Inc.,  an  Oklahoma   corporation
("Thrifty"),  Dollar  Thrifty  Automotive  Group,  Inc., a Delaware  corporation
("DTAG"), Bankers Trust Company, a New York banking corporation,  as Trustee and
Enhancement Agent (the "Trustee"),  Credit Suisse First Boston, New York Branch,
as the Series  1998-1 Letter of Credit  Provider  ("CSFB"),  and Dollar  Thrifty
Funding Corp.,  an Oklahoma  corporation,  as the sole Series 1998-1  Noteholder
("DTFC")(RCFC,   Dollar,   Thrifty,   DTAG,  the  Trustee,  CSFB  and  DTFC  are
collectively referred to herein as the "Parties").

                                    RECITALS:

     A.  RCFC,  as  Issuer,  and the  Trustee  entered  into that  certain  Base
Indenture  dated as of December  13, 1995,  as amended by the  Amendment to Base
Indenture dated as of December 23, 1997 (the "Base Indenture"); and

     B. RCFC and the Trustee entered into that certain Series 1998-1  Supplement
dated as of March 4, 1998,  as  subsequently  (i) amended by Amendment  No. 1 to
Series  1998-1  Supplement  dated as of  March 4,  1999,  (ii)  supplemented  by
Supplement No. 1 to Series 1998-1  Supplement  dated as of March 4, 1999,  (iii)
supplemented by Supplement No. 2 to Series 1998-1  Supplement  dated as of March
4, 1999, (iv) supplemented by Supplement No. 3 to Series 1998-1 Supplement dated
as of October 20, 1999,  (v)  supplemented  by Supplement No. 4 to Series 1998-1
Supplement  dated as of February 18, 2000, and (vi)  supplemented  by Supplement
No. 5 to Series  1998-1  Supplement  dated as of July 17,  2000 (as  amended and
supplemented  to the date  hereof,  the  "Series  1998-1  Supplement";  the Base
Indenture and any Supplement thereto, including the Series 1998-1 Supplement are
collectively referred to herein as the "Indenture"); and

     C. The  Parties  wish to amend the Series  1998-1  Supplement  as  provided
herein.

     NOW THEREFORE, the Parties hereto agree as follows:

     1. Definitions.  Capitalized terms used in this Supplement No. 6 not herein
        ------------
defined shall have the meaning  contained in the Series 1998-1 Supplement and if
not defined  therein  shall have the meaning set forth in the  Definitions  List
attached as Schedule 1 to the Base Indenture.

     2. Amendments. The Series 1998-1 Supplement is hereby amended as follows:
        -----------

          (a) By deleting the following definitions contained in Article 2(b) in
     their entirety:

                                       -1-

<PAGE>

          "Carryover Controlled Amortization Amount"

          "Controlled Amortization Amount"

          "Controlled Distribution Amount"

          "Series 1998-1 Controlled Amortization Period"

          "Series 1998-1 Controlled Distribution Amount Deficiency"

          (b) By deleting the reference to "March 4, 2001" in the  definition of
     "Series 1998-1  Expected Final Payment Date"  contained in Article 2(b) and
     replacing it with "March 3, 2003."

          (c) By deleting the phrase "the Series 1998-1 Controlled  Amortization
     Period and"  contained in  subparagraph  (ii) of the  definition of "Series
     1998-1 Invested Percentage" contained in Article 2(b).

          (d) By deleting the  definition of "Series  1998-1  Revolving  Period"
     contained  in  Article  2(b) in its  entirety  and  replacing  it with  the
     following:

               ""Series  1998-1  Revolving  Period"  means,  with respect to any
               class of the Series 1998-1  Notes,  the period from and including
               the Series 1998-1  Closing Date to the  commencement  (if any) of
               the Series 1998-1 Rapid Amortization Period."

          (e) By deleting the reference to "March 4, 2001" in the  definition of
     "Series 1998-1 Termination Date" contained in Article 2(b) and replacing it
     with "March 3, 2003."

          (f) By deleting  Section  4.7(b) in its entirety and replacing it with
     the following:

          "(b) INTENTIONALLY DELETED."
               ------------- --------

          (g) By deleting  the phrase "and the  Controlled  Amortization  Period
     Profits" contained in Section 4.7(c)(ii)(1).

          (h) By deleting the  cross-reference  to  "4.7(b)(i)(3)"  contained in
                                                     -------------
     Section 4.7(d).

          (i) By deleting  Section  4.7(d)(vii) in its entirety and replacing it
     with the following:

          "(vii) INTENTIONALLY DELETED."
                 ------------- --------

                                                        -2-

<PAGE>

          (j) By deleting  Sections  4.10(a)(i)  and (ii) in their  entirety and
     replacing them with the following:

               "(i) INTENTIONALLY DELETED.
                    ------------- --------
               (ii) INTENTIONALLY DELETED."
                    ------------- --------

          (k) By deleting  Section  4.10(a)(iv) in its entirety and replacing it
     with the following:

               "(iv) On each  Payment  Date  occurring  on or  after  the date a
               withdrawal  is made  pursuant  to  Section  4.10(a)(iii)  of this
               Supplement,  the Trustee shall, in accordance with Section 5.1 of
               the Base Indenture and the Master  Servicer's most recent Monthly
               Certificate  pay to the Series  1998-1  Noteholders  specified in
               Section  4.10(a)(iii)  the amount  deposited in the Series 1998-1
               Distribution  Account  for the payment of  principal  pursuant to
               Section 4.10(a)(iii) of this Supplement."

          (l) By  deleting  the  cross-reference  to  "(b)(v)(1)"  contained  in
                                                       ----------
     Section 4.14(b).

          (m) By deleting  the  cross-reference  to  "(b)(iii)(1)"  contained in
                                                      ------------
     Section 4.15(a).

     3.  Effect of  Supplement.  Except as  expressly  set  forth  herein,  this
Supplement No. 6 shall not by implication or otherwise limit, impair, constitute
a waiver of, or  otherwise  affect the rights and remedies of any of the Parties
hereto under the Series 1998-1 Supplement,  nor alter,  modify,  amend or in any
way affect any of the terms,  conditions,  obligations,  covenants or agreements
contained in the Series 1998-1 Supplement,  all of which are hereby ratified and
affirmed in all  respects by each of the  Parties  hereto and shall  continue in
full force and effect.  This  Supplement No. 6 shall apply and be effective only
with respect to the  provisions  of the Series  1998-1  Supplement  specifically
referred to herein and any  references  in the Series  1998-1  Supplement to the
provisions of the Series 1998-1 Supplement specifically referred to herein shall
be to such provisions as amended by this Supplement No. 6.

     4.  Applicable  Provisions.  Pursuant to Section 11.2 of the Base Indenture
and  Section  8.6 of the  Series  1998-1  Supplement,  the  Trustee,  RCFC,  the
Servicers,  the Required Noteholders with respect to the Series 1998-1 Notes and
the Series 1998-1  Letter of Credit  Provider may enter into a supplement to the
Indenture  for the  purpose of  amending  any  provisions  of the Series  1998-1
Supplement  provided that the Rating Agencies shall confirm that such supplement
will not result in the reduction or  withdrawal  of their ratings  applicable to
the  Commercial  Paper Notes and, as  evidenced  by an Opinion of Counsel,  such
supplement affects only the Series 1998-1 Noteholders.

                                                        -3-

<PAGE>

     5. Waiver of Notice. Each of the Parties hereto waives any prior notice and
        ------ -- -------
any notice  period that may be required  by any other  agreement  or document in
connection with the execution of this Supplement No. 6.

     6. Binding Effect. This Supplement No. 6 shall be binding upon and inure to
the benefit of the Parties and their respective successors and assigns.

     7.  GOVERNING  LAW. THIS  SUPPLEMENT NO. 6 SHALL BE CONSTRUED IN ACCORDANCE
         ---------  ---
WITH THE LAWS OF THE STATE OF NEW YORK (WITHOUT  GIVING EFFECT TO THE PROVISIONS
THEREOF REGARDING  CONFLICTS OF LAWS), AND THE OBLIGATIONS,  RIGHTS AND REMEDIES
OF THE PARTIES HERETO SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

     8.  Counterparts.  This  Supplement  No. 6 may be executed in any number of
         -------------
counterparts and by different parties hereto in separate  counterparts,  each of
which when executed and  delivered  shall be deemed to be an original and all of
which taken together shall constitute but one and the same agreement.

                         [SIGNATURES ON FOLLOWING PAGES]

                                       -4-

<PAGE>

     IN WITNESS  WHEREOF,  the Parties have caused this  Supplement  No. 6 to be
duly executed and delivered as of the day and year first above written.

RCFC:

RENTAL CAR FINANCE CORP.,
an Oklahoma corporation

By: _____________________________________________
         Pamela S. Peck
         Vice President

TRUSTEE AND ENHANCEMENT AGENT:

BANKERS TRUST COMPANY, a New York banking
corporation

By: _____________________________________________
         Name: __________________________________
         Title: _________________________________

SERVICERS:

DOLLAR RENT A CAR SYSTEMS, INC.,
an Oklahoma corporation

By: _____________________________________________
         Michael H. McMahon
         Treasurer

THRIFTY RENT-A-CAR SYSTEM, INC.,
an Oklahoma corporation

By: _____________________________________________
         Pamela S. Peck
         Treasurer

            -5-

<PAGE>

DOLLAR THRIFTY AUTOMOTIVE GROUP, INC.,
a Delaware corporation

By: _____________________________________________
         Pamela S. Peck
         Treasurer

SERIES 1998-1 LETTER OF CREDIT PROVIDER:

CREDIT SUISSE FIRST BOSTON, NEW YORK
BRANCH, a Swiss banking corporation

By: _____________________________________________
         Name: __________________________________
         Title: _________________________________

By: _____________________________________________
         Name: __________________________________
         Title: _________________________________

SOLE SERIES 1998-1 NOTEHOLDER:

DOLLAR THRIFTY FUNDING CORP.,
an Oklahoma corporation

By: _____________________________________________
         Pamela S. Peck
         Vice President

                                       -6-

<PAGE>

     The  following  financial  institutions  hereby  consent  to the  foregoing
Supplement No. 6 as of the day and year first above written.

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$75,000,000                   CREDIT SUISSE FIRST BOSTON, NEW YORK
                              BRANCH, a Swiss banking corporation

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                        -7-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$65,000,000                   THE CHASE MANHATTAN BANK

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                        -8-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$50,000,000                   ING (U.S.) CAPITAL, LLC

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                        -9-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$70,000,000                   THE BANK OF NOVA SCOTIA

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -10-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$50,000,000                   ABN AMRO BANK N.V.

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -11-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$40,000,000                   CREDIT INDUSTRIEL ET COMMERCIAL

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -12-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$40,000,000                   DRESDNER BANK AG, NEW YORK AND
                              GRAND CAYMAN BRANCHES

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -13-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$25,000,000                   FLEET NATIONAL BANK

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -14-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$25,000,000                   BBL INTERNATIONAL (U.K.) LTD

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -15-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$30,000,000                   BANK OF MONTREAL

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -16-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$50,000,000                   BANK ONE, TEXAS N.A.

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -17-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$30,000,000                   BAYERISCHE LANDESBANK GIROZENTRALE,
                                 NEW YORK BRANCH

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -18-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$25,000,000                   COMERICA BANK

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -19-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$25,000,000                   MORGAN GUARANTY TRUST COMPANY OF
                              NEW YORK

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -20-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$50,000,000                   DEUTSCHE BANK AG, NEW YORK A/O
                             CAYMAN ISLANDS BRANCHES

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -21-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$25,000,000                   KBC BANK

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -22-

<PAGE>

LIQUIDITY COMMITMENT:         LIQUIDITY LENDER:

$25,000,000                   WELLS FARGO BANK

                              By: ________________________________________
                                       Name: _____________________________
                                       Title: ____________________________

                                                       -23-

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}]]