[onewhippedpuppy]

Unless you have an E85 vehicle, most manuals will explicitly state that the use of greater than 10% ethanol fuel is not recommended. Avoiding E10 for collector cars is also pretty well known, the fuel systems simply are not designed for that fuel. Same thing goes for not using it in most small engines, my weed-eater runs like hell on E10. I fill up my S8, 911, and all of my gas cans from the non-ethanol gas station. My wife's truck gets filled up anywhere, it's E85 and doesn't seem to care what we feed it. My S8 gets an extra 3-4 MPG on the highway running on non-ethanol gas.