The WEX Bank is a fuel card from WEX Bank. Rewards: Rebates per gallon at Shell by gallons per billing cycle: 0-500 2 cents; 501-5,000 3 cents; 5,001-10,000 5 cents; 10,001+ 6 cents; 15% off maintenance at participating Jiffy Lube locations. Loan terms: Choice of Pay in Full (balance paid in full each month) or Pay Over Time (flexibility to carry a monthly balance).