I searched for a station that offers "pure Gas". Because I live very near lake St Clair, there are a lot of marinas that sell gas with no ethanol. They charge thru the roof for that gas. But I found a Clark station across from a boat launch that sells 100% pure gas. Their price is in line with other gas stations so I tried some.
On 10% I fill up at 120 miles and take 3.2 gal. On pure gas I still fill up at 120 miles, but I only take 3 gal. So I do get better mileage and based on roll ons with some of my friends, I seem to get a bit more power. Problem is its about 5 mile out of my way to get the pure gas so its about a wash. I just put my Honda away for the winter and made sure to run it dry then fill with pure gas. I will do the same to the V-Max after drag strip day on the 13th.
Thats a very long way of saying "if you can get 100%gas, get it!)
Craig
Oh by the way, when I ride with Vmax Mike and gang, It doesn't matter what gas I use, I better be pulling into that Gas station at about 80 miles. So I guess if you want to get better mileage stay away for other v-max.