Ethanol ???

[Jamesp]

Ethanol is used as an oxygenate to promote lower emissions. It has a lower fuel value (BTU/lb mass) than gasoline. If I could get gasoline without ethanol I'd go that route and add a little octane booster.

[MoneyPit]

Originally Posted by Jamesp

Ethanol is used as an oxygenate to promote lower emissions. It has a lower fuel value (BTU/lb mass) than gasoline. If I could get gasoline without ethanol I'd go that route and add a little octane booster.

Thanks for the info

[j.fro]

I've gone back and forth using both 100% 93 octane and 10% ethanol 93 octane, and I have monitored my mpg using an iPhone app (road trip). In two years, I have not seen a difference in mpg or power. Had I seen a difference, I would go out of my way to use the better fuel. I want to be an ethanol hater, but I have no empirical evidence .

[MoneyPit]

Originally Posted by Jamesp

Ethanol is used as an oxygenate to promote lower emissions. It has a lower fuel value (BTU/lb mass) than gasoline. If I could get gasoline without ethanol I'd go that route and add a little octane booster.

So would it make sense that if you have pure gas it would equal better performance as even with 93 octane it has 10% ethanol that degrades performance?