Here in middle GA we grocery shop at Kroger. They have a fuel rewards program that is hard to beat. Up to $1 off per gallon (35 gallon limit) off their already low fuel prices. We save points until we have enough and drag all our vehicles to fill up and save $35. We buy gift cards, usually Amazon, which give you double points. With a family buying groceries and the occasional gift card, we get our $35 off every month.
If you fill up and give your Kroger card, there is always a few cents discount per gallon, even if you are saving your points for the dollar off.
Of course you can pay with a rewards credit card - bonus $.
How Do Kroger Fuel Points Work? - Kroger Krazy