Your wasting octane if it doesn't require it. With that said I think premium is best to run these days they blend ethonal in mid and 87 octane and you hear stories about the ethonal causing problems in the carbs. More so on small engines but still it's worth the cpl bucks to upgrade to 93 IMO
in my area they blend ethanol in every grade ...I wont run any pump fuel in any of my quads, id rather waste money on fuel then my motor..ive seen to many friends spend too much time and money on ethanol related issues.now im not saying ill run C12 in all my quads, but I wont run pump
ethanol in every grade around here. no way to avoid it. i would check the sticker on the pump if you have any doubt, i believe it has to say if theres ethanol added or not.
around the Mass area they only are legally required to label and disclose ethanol if total exceeds 10%