well greg said..
Thank god since E10 already cause spark plug, Injector, Fuel pump and other fuel system problems on my blazer... Since I switched to NonOx, never anymore problems and runs better and get 3-4 mpg more. So when consider blazer was about 16-17 and now I get 20-21 mpg it is worth it.
I don't even know if we have ethanol around here. I don't pay a ton of attention at the pump just reach for the 91 (when im on my bike anyway)
Some pumps here states Ethanols added.. hm I may have to skip those stations..