
Really though, run it at 100:1, if your bike blows up they pay for the rebuild. What better guarantee can you ask for. I've run Amsoil 0W40 in my bikes since 2002. I ran two quarts of Spectro through my 2007 450, and the crank stopped spinning on my 5th ride. (changed every 3 riders from 2007-2011) That's 0W oil in both sides of my 70+ HP motor. My friend went through clutches like crazy in his new Honda's, heavier springs and all, he tried all kinds of oil until I was finally able to talk him into trying some Amsoil. No clutch problems since.