Well, I can tell you from first had experience that neither E85 or even strait ethanol or menthol will hurt your paint if you spill it on it. It's just not there long enough before it evaporate. I've ran a fair bit of E85 though my truck and spilled a bit when refueling as well as I have Meth injection for my turbo that uses the windshield washer tank, that's still functional as such and sprayed wwf, strait meth, ethanol and various mixtures of all on the windshield and paint and nothing is pealing, faded or discolored. But all this is OT, so back to the discussion at hand