Engine/Gas

A flexible-fuel vehicle (FFV) or dual-fuel vehicle (colloquially called a flex-fuel vehicle) is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel, and both fuels are stored in the same common tank.

So no you cannot run diesel in a gas engine, flex fuel or not.

tennisshoes, what is regular unleaded gas? In are town we are getting the E-85 gas. I assume it is something different that regular unleaded? My car is a 2010 Chevy Impala that has the flex fuel set-up and I have ben running the regular unleaded in it.

Would my Impala run with the E-85 fuel, I assume it is going to be cheaper since all it is, is corn.

Thank you shoes...

I am kind of wondering where you got your info about the E85 fuel? My 2011 Chevy Silverado 1500 is a Flex Fuel motor and I use it to tow trailers....better mileage and longer distances between fill ups...

I have a 2018 Chevrolet 2500 HD 6.0 flex fuel crew cab Silverado I live in Southern California will E-85 ethanol 100+octane harm my engine.