I am curious to know what types of discount cards everyone is using with the price of fuel running out of control.
Most that I have researched award points, or have some type of limit attached to them.
I finally settled on the Chase Rewards Mastercard. They give 3% cash back with an additional 3% for the first 90 days. No limit.
Anyone doing better than that?

Shell Mastercard from Citi Cards. 5% rebate no limit. You must fuel up at a Shell station. Rebate appears on the following months statement. When we signed up it was 15% rebate for first 2 months. They have a $25.00 sign up bonus[not sure].

There is an article in this months FMCA magazine that if you use your Flying J card that for the next 3 months you are guaranteed the minimum discount. Be sure to use the card that was issued to you by FMCA, not the Gulf Stream card.