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Flex Fuel Finder
“Not having been in the fuel retailing business before this, I didn’t realize that margins were so tight on gasoline. I’m actually selling regular unleaded right now for a couple of cents less than what I pay for it. But with both E30 and E85, I’m able to make about 20 cents per gallon because I can buy it at such a discounted price.

"I wanted to focus on the farmers, because we have a strong allegiance of fuel – we convert it into energy, and it's homegrown – our local communities support this. Of course, because we’re in a farming community, people try to use the corn they grow. They know that the more gallons of ethanol they burn in their cars and trucks, the less we’re going to be dependent on foreign oil."
- David Miller, Ethy Pump-n-Go, Portland, Indiana

Flex Fuel Vehicles


Half of all U.S. vehicles made today are flex fuel ready

FFVs are specially designed to run on regular unleaded or any ethanol fuel blend up to 85 percent. Special on-board diagnostics “read” the fuel blend, enabling drivers to fuel with E10, E15, E20, E30, E40, E50 or any ethanol blend up to E85, or regular unleaded if E85 is not available. Therefore, any part of the engine which comes in contact with the fuel has been upgraded to tolerate alcohol. Normally, these parts include an upgraded fuel system with alcohol compatible parts. Today, Chrysler Corporation, Ford Motor Company, General Motors, Nissan and Toyota all offer flexible fuel engines as standard equipment in certain vehicles — at no additional cost to consumers. Each FFV comes with the same factory warranties as gasoline vehicles.

What are the differences between a FFV and a regular gasoline-only model?

The significant difference is the fuel sensor which detects the ethanol-to-gasoline ratio. A number of other parts on the FFV’s fuel delivery system are modified to be E85 compatible. The fuel tank, the fuel lines, fuel injectors, computer system and anti-siphon device have been slightly modified. Alcohol fuels can be more corrosive to certain metals than gasoline; therefore, fuel system parts have been upgraded for high level ethanol use.

Download a PDF of current FFVs.