Here are credit cards we recommend for gasoline purchases. We don’t offer the Shell card. However, the credit cards on our site are accepted at Shell gas stations and all other gas stations. With these cards you can earn at least 1% cash back on all purchases, including gas purchases. And 1% cash back saves about 2.57¢ per gallon. But most gas rewards credit cards offer additional cash back on gas purchases allowing cardholders to earn up to 5% back. Simply compare the offers and pick the one that is best for you.