[MyIBMssRS]

Originally Posted by Russell James

Lubricity is another factor to consider. Spill some E85 on the concrete, some 93 octane next to it. Slide your foot through each. Which one would you like your fuel pump, rings, valve stems... lubricated by. For me, not the one that my foot won't slide in.

I've seen a long term fleet study of heavy use, high mileage vehicles A - B tested with E85 vs gasoline. Less ring, cyl wall, cam, valve stem... wear with gasoline. Kinda makes sense, since it's slippery and alcohol isn't.

If a fuel pump is maxed out, and now using a fuel with significantly less lubricity.... I'm not thinking that is a recipe for longevity. I'd only use E85 in something designed and validated for E85, but that's just me.

I wouldn't drop up to $60k on a sports car and then mess with the fuel to save a few bucks. It costs money to play the game.