Store Locator Waterloo FAST STOP409 S. IL Route 3Waterloo, IL 62298 Contact Phone: 618-939-4979 Website: www.gatewayfs.com Get Directions Amenities Convenience Store ATM Food Fuel Types Gasoline Diesel E85 Fuel Prices Regular $4.97 as of 7/19/2022 7:35:20 AM Diesel $5.69 as of 7/19/2022 7:35:20 AM E85 $4.86 as of 7/19/2022 5:43:30 AM Accepted Payments American Express Discover FAST STOP Cards Gift Card Mastercard Visa Voyager Wright Express