Document:

<PAGE>

                                                                   Exhibit 10.40

                              AMENDMENT TO CONTRACT
                            DEALER GASOLINE AGREEMENT

                                                           (Branded Diesel Fuel)
                                                                 Facility: 82064
                                                       Customer Account: 0883355

THIS AMENDMENT, dated as of Sept. 2, 1999, amends the Contract Dealer Gasoline
Agreement ("Agreement") dated Sept. 2, 1999, between ARCO Products Company (a
division of Atlantic Richfield Company, incorporated in Delaware) ("ARCO") and
LLO-Gas, Inc. ("Buyer") with delivery premises at 64200 20th St., Palm Springs,
California 92258 ("Premises").

It is hereby agreed by and between the parties that effective on the date
written above or the Commencement Date of the Agreement, whichever is later, the
Agreement is hereby amended to provide that except as set forthbelow, any
references to "motor fuels comprising gasolines and gasoline-containing
materials bearing the ARCO trademark and other identifying symbols," "gasoline"
and "product" shall be construed to include such motor fuels comprising diesel
fuel and diesel fuel-containing materials bearing the ARCO trademark and other
identifying symbols ("ARCO branded diesel fuels and diesel fuel-containing
materials") as Buyer may purchase and receive from ARCO and ARCO may sell and
deliver to Buyer at the Premises during the term hereof.

It is understood and agreed by and between the parties that Temporary Voluntary
Allowances ("TVA's") are not applicable to diesel fuel or diesel fuel-containing
materials and, therefore, the terms and conditions relating to TVA's set forth
in the Prices provisions, Paragraph 5 of the Agreement, are not amended and
supplemented by this Amendment. It is further understood and agreed by and
between the parties that, except as herein specifically amended and
supplemented, all other terms and conditions of the Agreement, as previously
amended and supplemented, shall be and remain in full force and effect.

This Amendment automatically supercedes and terminates, as of the Effective Date
hereof, any and all other contracts, agreements or understandings between the
parties covering the sale and delivery of ARCO branded fuels and diesel
fuel-containing materials to Buyer at the Premises for resale therefrom.

BUYER ACKNOWLEDGES THAT BUYER HAS READ THIS AMENDMENT AND FULLY UNDERSTANDS ALL
OF THE TERMS, PROVISIONS AND CONDITIONS HEREOF.

This Amendment is not binding until executed by Buyer and by an authorized
officer or manager of ARCO.

IN WITNESS WHEREOF, the parties have executed this Amendment.

ARCO Products Company,                     Franchisee
a division of AtlanticRichfieldCompany

/s/ Connie Carroll             9/2/99      /s/ John Castellucci           9/2/99
-------------------------------------      -------------------------------------
                                 Date                                       Date

/s/ Hollie Johnson             9/2/99      /s/ Denise Newton              9/2/99
-------------------------------------      -------------------------------------
                                 Date                                       Date<PAGE>

                                                                   Exhibit 10.41

Recording Requested By:

When Recorded Mail To:

Name:    ARCO Products Company

Attn:    Karon Shells

Street:  4 Centerpointe Drive

City &:  La Palma

State:   California 90623-1066

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                MEMORANDUM OF CONTRACT DEALER GASOLINE AGREEMENT

                                                                 Facility: 82064

      THIS MEMORANDUM OF CONTRACT. DEALER GASOLINE AGREEMENT, dated Sept. 2,
1999, is executed by and between LLO-Gas, Inc. ("Franchisee") located at 64200
20th St., Palm Springs, California 92258, and ARCO Products Company, a division
of Atlantic Richfield Company, a Delaware corporation, with offices at 1055 West
Seventh Street (P.O. Box 2570) in Los Angeles, California 90051-0570 ("ARCO).

      In return for valuable consideration, Franchisee has granted to ARCO a
right of first refusal to all of Franchisee's interest, whether fee or
leasehold, in the land situated at the street address of 64200 20th St., in the
city of Palm Springs, in the state of California, and more specifically
described in Exhibit "A" attached, and all improvements thereon.

      The terms of ARCO's right of first refusal are more fully set forth in
that certain Contract Dealer Gasoline Agreement between the parties hereto,
dated, Sept. 2, 1999, and this Memorandum of Contract Dealer Gasoline Agreement
is subject to all the covenants, conditions and terms set forth in that
Agreement, which is hereby adopted herein and made a part hereof as if all the
covenants, conditions and terms thereof were included in full herein.

      IN WITNESS WHEREOF, the parties hereto have executed this Memorandum of
Contract Dealer Gasoline Agreement as of the date first written above.

                                       Franchisee: LLO-Gas, lnc.

                                       By: /s/ John Castellucci
                                           -------------------------------------

                                       ARCO PRODUCTS COMPANY
                                       a division of Atlantic Richfield Company

                                       By: /s/ Connie Carroll
                                           -------------------------------------
                                           Connie Carroll, Manager
                                           Franchise Administration

<PAGE>

CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT

--------------------------------------------------------------------------------

State of California

County of Orange

On 9/2/99    before me,         Hollie Johnson, Notary Public
   -------              --------------------------------------------------------
    Date                Name, Title of Officer  - E.G., "JANE DOE, NOTARY PUBLIC

personally appeared   John Castellucci
                    ------------------------------------------------------------

|X|                                    proved to me on the basis of satisfactory
                                       evidence to be the person(s) whose names)
[S E A L]                              are subscribed to the within instrument
                                       and acknowledged to me that they executed
                                       the same in their authorized
                                       capacity(ies), and that by their
                                       signatures(s) on the instrument the
                                       person(s), or the entity upon behalf of
                                       which the person(s) acted, executed the
                                       instruments.

                                       WITNESS my hand and official seal.

                                       /s/ Hollie Johnson
                                       -----------------------------------------
                                       SIGNATURE OF NOTARY

                                    OPTIONAL
--------------------------------------------------------------------------------

Though the data is not required by law, it may prove valuable to persons relying
on the document and could prevent fraudulent reattachment of this form

|_|   INDIVIDUAL

|X|   CORPORATE OFFICER

                                          Memorandum of CDGA 82064
------------------------------------      --------------------------------------
                                               TITLE OR TYPE OF DOCUMENTS

|_|   PARTNERS    |_|   LIMITED
                  |_|   GENERAL                             1
                                          --------------------------------------
                                                      NUMBER OF PAGES
|_|   ATTORNEY-IN-FACT

|_|   TRUSTEE(S)

|_|   GUARDIAN/CONSERVATOR

|_|   OTHER:                                                9/2/99
                                                --------------------------------

----------

SIGNER IS REPRESENTING:
NAME OF PERSON(S) OR ENTITY(IES)

LLO-Gas, Inc.                                         None
------------------------------------      --------------------------------------
                                          SIGNER(S) OTHER THAN NAMED ABOVE

------------------------------------

--------------------------------------------------------------------------------

<PAGE>

CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT

--------------------------------------------------------------------------------

State of California

County of Orange

On 9/2/99    before me,         Hollie Johnson, Notary Public
   -------              --------------------------------------------------------
    Date                Name, Title of Officer  - E.G., "JANE DOE, NOTARY PUBLIC

personally appeared   Connie Carroll
                    ------------------------------------------------------------

|X|                                Personally known to me to be the person(s)
                                   whose names) are subscribed to the
[S E A L]

                        within instrument and acknowledged to me that they
                        executed the same in their authorized capacity(ies), and
                        that by their signatures(s) on the instrument the
                        person(s), or the entity upon behalf of which the
                        person(s) acted, executed the instruments.

                                       WITNESS my hand and official seal.

                                       /s/ Hollie Johnson
                                       -----------------------------------------
                                       SIGNATURE OF NOTARY

                                    OPTIONAL
--------------------------------------------------------------------------------

Though the data is not required by law, it may prove valuable to persons relying
on the document and could prevent fraudulent reattachment of this form

|_|   INDIVIDUAL

|X|   CORPORATE OFFICER

      Manager                             Memorandum of CDGA 82064
------------------------------------      --------------------------------------
                                               TITLE OR TYPE OF DOCUMENTS

|_|   PARTNERS    |_|   LIMITED
                  |_|   GENERAL                             1
                                          --------------------------------------
                                                      NUMBER OF PAGES
|_|   ATTORNEY-IN-FACT

|_|   TRUSTEE(S)

|_|   GUARDIAN/CONSERVATOR

|_|   OTHER:                                                9/2/99
                                                --------------------------------

----------

SIGNER IS REPRESENTING:
NAME OF PERSON(S) OR ENTITY(IES)

ARCO Products Co.                                     None
------------------------------------      --------------------------------------
                                          SIGNER(S) OTHER THAN NAMED ABOVE

------------------------------------

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