You cannot use a debit or credit card at the diesel pumps. You have to go in and see the cashier, even though they do not tell you that. They just let you go through eight screens on their pumps, probably they grab your credit card number for later, and then you still have to go in and see the cashier to pay. Then you have to know exactly how much fuel or DEF your vehicle is going to take. You have to guess. Not helpful