What is E85?

E85 can be used in all Flex Fuel Vehicles manufactured after 2008 (2006 for GM vehicles). It is a gasoline-ethanol blend containing up to 85% ethanol. Since ethanol is biodegradable, nontoxic, and water-soluble, E85 contains roughly 80% less of the contaminants that can be found in Unleaded gasoline.


Q: What is the difference between Unleaded15 and E85?
A: Both fuel products consist of gasoline blended with ethanol. The level of ethanol in each fuel is the primary difference. E85 can only be used in Flex Fuel Vehicles.

Q: If my vehicle is approved for the use of Unleaded15, does that mean I can use E85?
A: If you have a Flex Fuel Vehicle, you can use both products. E85 cannot be used in non-Flex Fuel Vehicles.

How do I know if I have a Flex-Fuel vehicle?

According to the U.S. Department of Energy, there are several indicators on your vehicle to determine whether it is capable of using flexible fuel.

Which Thorntons locations offer E85?

Thorntons has partnered with federal and state energy and agricultural offices as well as clean air groups, clean cities coalitions, and corn growers associations across the Midwest to provide Unleaded15 and E85 to our guests Check our location finder to see which of our many Thorntons locations offer E85.

Location Finder

Core Purpose: To be people’s favorite place to stop when they are on the go