Until I started using Lucas 2 Cycle Oil in my 2000 XC500 Polaris Snowmobile I was having a lot of problems with excessive exhaust smoke, play fouling and my exhaust power valves needed to be cleaned every 3-400 miles.Since using your oil I’ve noticed very little exhaust smoke (after the machine is warmed up there is none at all). I’ve been running the same plugs for over a month and my power valves still don’t need a cleaning. Lucas Oil should call their 2 cycle oil a “miracle drug”. No more problems like I had when I was using Shell Advance Sno Ultra. . . In fact it seems to make power. . . I use this snowmobile on the trails and in drag racing . . . I only wish I knew about your oil a lot sooner. Also I race motocross. . . my race number is 443 in the Monitaho Motocross Association and I compete in the Vet Junior Class. My bike number is a KX-125 Kawasaki. I’ve always used Maxima Castor 927. For this coming season I’m switching over to Lucas 2 Cycle Oil.