AMENDMENT TO THIRD ADDENDUM TO DISTRIBUTOR FRANCHISE AGREEMENT

Exhibit 10.13

AMENDMENT TO THIRD ADDENDUM

TO DISTRIBUTOR FRANCHISE AGREEMENT

This Amendment to the Third Addendum to Distributor Franchise Agreement is entered into by and between CITGO Petroleum Corporation (“CITGO”) and SSP Partners (“SSP”) on March 28, 2001.

WHEREAS, CITGO and SSP have entered into a Third Addendum to Distributor Franchise Agreement dated September 6, 1999 (the “Third Addendum to DFA”).

WHEREAS, the Third Addendum to the DFA sets forth the purchase price for motor fuels sold by CITGO to SSP and delivered to certain stations that are operated by SSP (the “Operated Stores”). SSP has requested that this purchase price also apply for motor fuels sold by CITGO to SSP and delivered to stores that are operated by dealers, but the stores’ gasoline inventory is owned and priced by SSP or the store is an unattended fueling site where the gasoline inventory is owned and priced by SSP (collectively the “Consignment Stores”)

WHEREAS. SSP has also agreed to brand with CITGO certain locations that are currently branded Exxon, Chevron and, if SSP acquires the Tex Mart Stores, the Tex Mart Stores.

NOW THEREFORE, in consideration of the premises and covenants contained herein, IT IS AGREED AS FOLLOWS:

1

IN WITNESS WHEREOF the parties have executed this Amendment to the Third Addendum to DFA on the date and year above written.

2

Exhibit A

Amendment to Third Addendum to Distributor Franchise Agreement