Works for me.
I run Amsoil in my RC51, Saturn, and K-10. I probably wouldn't if I wasn't getting it at cost but still should. The 35K intervals on oil changes in my car and 25K in my truck are just plain too good to pass up. And being an Amsoil user in my track bikes since the first F-2's I can say that it always kept my lil' 600's bullet proof. Maybe I'd have gotten the same results from standard oils, but I'm not messing with what has worked for me for years. I only wish I'd have been using it as a kid in my 2-stroke Elsinore's.