Crossing the plains last summer I topped-up with three consecutive tanks of E85. If the fuel was available locally I'd still be using it. EFI brain did it's job as I did not experience any noticable detonation/pinging... 22RE RV.

FWIW, I'm making major adjustments to reduce my use of fuel - this is serious business, now. Dramatic environmental changes, neocon geopolitical disaster in Middle East, peak oil and exponential increase in global demand are very real and convincing arguments. Anyone who reads and gets their news some place other than FOX "gets it" too. <img src="/forums/images/graemlins/patriot.gif" alt="" />