I wouldn't know. We've been using 90/10 instead of MTBE for several years here in the Chicago metro area. It will run just fine (read: not do damage) in regular internal combustion engines. E-85 ("flex fuel") is something different - a much higher ethanol content.

 

In my cars, using ethanal has consistantly lowered gas milage by 2-5 MPG, and performance is noticably worse.
I feel for the farmers (I'm in the mid-west), but using MORE fuel to burn corn makes absolutely no sense. And why should anyone have to pay as much for fuel that doesn't burn as well? Gasoline engines are inefficient beasts as it is. Dilluting your fuel only makes it worse. I'll never be sold on that crap being better for ANY reason. I'd rather pay 10% more for fuel without it.

There's one station nearby that hasn't got it yet. Guess where I go.

 

I am curious as to what tune should be used with the E10 89 octane? The 3 tunes on my tuner are for 87,91, and 93.

 

Your right I was wrong. Sorry I thought it said ethanol

 

Let's make sure everyone is on the same page, 90/10 is E10 it is a blend 90% Gas and 10% Ethanol. E85 on the other hand is 15% Gas and 85% Ethanol.

E10 is fine in our cars and all cars for that matter MTBE is going away and all you will be able to find is E10. E85 on the other hand will require modifications to use because the ethanol will damage the fuel rails and seals in the fuel system.

 

Here is a pretty interesting read on Ethonol. A long read, but a good one

article

 

Great write up Hawman.. THANKS...

I have been telling people near me the same things that story points out...

The move toward E85 is political.. not logical! and absolutely NOT Financial!

 

I wish this were true, but it's not. I don't think you're taking into account all of the other things we use oil for besides producing gasoline.