It ain't much, but, you gotta' fuel the truck anyway. It works out to a 1 cent on the gallon rebate to the driver. Sometimes the retailer will run a special and give 2 cents on the gallon. Sign me up.
I try to fuel at the Petros because they segregate the four wheeler's fuel desk away from the truck's, they have better stuff in the store and restaurant, and, the shop will rebate 1 cent on the dollar spent with them. If you buy some tires, or, get the truck serviced it makes a nice little tip for choosing Petro.