100% Gasoline vs 10% Ethanol

dodge guy wrote:
I can tell you that on my V-10 Excursion it dropped my mileage by up to 2mpg. And had power down to the point sometimes I could barley hit 55mph into a headwind. I filled up in WI once with straight gas non ethanol 92. Huge difference. Felt like the X picked up another 50HP! I ran another tank while I was up there. When I got home I had to fill with 10%E, back to the way it was. So I experimented with 92 with 10%E this got me almost where I was. I ran 93 10%E for another year before I got a tune from 5 star where I could run 89 from anywhere and I got my mileage and performance back.

Ethanol is a waste IMO and serves no useful purpose other than helping out farmers with tax incentives. And makes the greenies feel better!

Funny, every engine I have seen on the dyno make the most HP on oxygenated fuel. EX: fuel with alkie in it. In fact, that is one of the tricks engine builder use to get more HP out of an engine.

It works like this. Any engine that gets more oxygen makes more power. That is the whole reason of oxygenated fuels in racing. That's why Nitro is the most powerful fuel in racing. It has over 50% oxygen in it.

Oxygenated fuels are great for power. Not so much for mileage. :)