Quote:
Originally Posted by knowitman
What diarmadhi is saying is that a car designed to run specifically on E85 will have a higher compression ratio allowing it to run as efficiently as it can. Trying to use gasoline in one of these engines will cause it to knock and ping.
|
Yes, an engine designed for E85 or 100% ethanol would be set up a lot different and could make more HP efficiently. However, it still would cost more per mile using E85 than gasoline because of its lower BTU output with the prices we have today.
The answer to the OP's question is; "in theory using 10% ethanol mix does not have the energy output of gasoline so it should get less mileage", however any real world effect on HP and mileage could vary because of engine tuning, driving habits, etc. IMO. Just try it and see for yourself, it won't hurt it.