My perception on real gas
As an engineer, I hate "feelings" not supported by hard data. 1/4 tank left, went with premium. With tank down to 1/4 again, came across a station offering 93 ethanol free and filled it up again. ...
Forum Discussion
Ethanol has about 2/3 the energy content of gasoline. If your comparing 93 octane ethanol free to 93 octane E10 you'd expect the ethanol free gasoline to perform about 3% better. A 3% increase in fuel economy could maybe be measured but I don't believe any of us could "feel" a 3% gain in power or fuel economy. Any actual studies that I have read have found more like a 1% reduction in fuel economy and no change in power when using E10 fuel vs ethanol free gasoline. Some engines have been measured to perform slightly better on gasoline with ethanol.
I believe the perception the op had with regard to how his engine performs on one fuel vs another is about like someone saying he finds it easier to walk up a flight of stairs when he has waffles for breakfast vs pancakes.
I believe the perception the op had with regard to how his engine performs on one fuel vs another is about like someone saying he finds it easier to walk up a flight of stairs when he has waffles for breakfast vs pancakes.
