That mysterious fuel is ethanol-free gas, and if you can find it, it'll probably be more expensive than anything else on the ...

Sure, you can do some of the same things at Ethanol Retailer, but this is an app we're talking about. E85 Fuelfinder uses a built-in database of E85 stations from the U.S. Department of Energy.

In some cases, you might find ethanol-free gas, but most commonly you'll see regular gasoline — which only contains about 10% ethanol in its composition and is symbolized as E10. E85 (also ...