A new Amex offer just popped up for Quiktrip. The details of the offer allow you to get a $5 statement credit when you spend $5 in store, not at the pump. You can use the offer TWICE per card for a total savings of $10 per card. I was able to add this offer on 17 of our Amex cards using the multiple tab technique.
The best use I see for this offer is to go into the store buy $10 gift cards. Ask the cashier to split the $10 gift card purchase into two $5 swipes on the same card. This process will trigger both $5 offers on that Amex card! I personally use this to buy 17 cards for $170 in free gas!! Act quickly, because this offer will likely disappear. Cheers!