I figured i had better mow my grass since it has been about 3 months(we are in a severe drought here). I have a Honda tractor mower, liquid cooled that I have had for years and hope for many more. Anyways, I was mowing and the fuel light came on so I took her to the barn to fuel up,lowered the throttle to idle and she was doing that roughly, and began pouring in the only gas I had on hand, and that was pure,alcohol free,Shell V-Power that the local airport guys use in their planes. Amazing........the tractor's engine went from a rough idle to a purring kitten !!! I couldn't believe it.... I had always used the cheapest stuff for my mowing chores and thought it was ok. And it probably is but my bike is a different story. I won't ever chance knowingly using ethanol crap in my pride and joy. I said all that to say this; THERE IS A DIFFERENCE.