American Express business cards have a new offer that will save you 10% on gas at Exxon Mobil.
Exxon Mobil Amex Offer
Get 10% back as a statement credit by using your enrolled Business Card on eligible purchases paid for directly at the pump at U.S. Exxon and Mobil locations by 12/31/2019. Limit of $100 in total statement credits.
Offer valid for purchases paid for at the pump at U.S. Exxon and Mobil locations only. Card must be swiped at the pump in order to be considered eligible. Purchases such as Speedpass
A good option to have that clearly beats all other cards on gas purchases. You can get better deals with fuel points from supermarkets, but if you don;t have those, then 10% off on gas is not bad at all.