E85? Nope. I don't know of any marine engines rated for E-85. Just the regular E10 stuff and never had a problem.
Oddly enough, the E10 stuff helps out in case there is any condensation, effectively drawing it into solution with the ethanol and harmlessly burning it. I've had issues with non-ethanolated fuel where any condensation causes water to stand in the bottom of the tank since it doesn't get absorbed into the fuel at all. I do try to put in a good amount of non-ethanol at the end of the season since the ethanolated stuff tends to suck moisture out of the air as it sits and turn into decent firefighting fluid that doesn't burn.
