E85 would be all over the place. I'm just fortunate to happen to have a station within 2 miles of my house, and the next nearest one is 25 miles away. I have to cars, each with a 91 and E85 tune. I just run the tank dry and switch to 91 if I'm going on a trip. It's a bit addictive getting used to an E85 tune, then having to switch to the 91 tune, but it's worth the "hassle" for me. At least you have 93 octane instead of the 91 out here.