Opinions on "non-ethanol fuel" vs "up to 10% ethanol fuel" in my 2017 RZR S900? Manual says that up to 10% ethanol gas is fine, but guy who runs ohv trail riding business only uses pure gas. I'm inclined to go with non-ethanol gas, because I've seen small engine equipment (chainsaws, blowers, weed whackers) need "early" maintenance (or even early grave) because of ethanol gas. I know it's more expensive, but I don't want to shorten the life of my machine by simply an incorrect or not wise fuel decision. Opinions? Thank you!