I just switched from Yamalube to Blue Marble oil in my 03 Banshee. Mixed it at 24:1 for the first tank, going down to 32:1 after this is all burnt through. Let Engine idle 10 minutes befor setting off this afternoon with new juice running through my quads veins. It seemed to take a liking and i notice no ill effects. Blue marble claims that their oil is environmentally friendly, burns cleaner, smokeless/oderless, and increases fuel mileage. I won't know about the increase in fuel mileage until i run it for a while. But it certainly burns clean. there was no smoke after about 10 minutes of idling, must have burned the yamalube out of the carbs. Slightly cheaper than yamalube I feel so far that this is the oil to burn. I've read alot of great reviews by people who use it in their watercraft/snowmobiles/dirtbikes.. thought I'd be the first to review it in a banshee. So far so Good.