Im running 10-40 Amsoil in the primary and haven't had any problems.I talked to steve in Atlanta (Bikers Dream) and there running 10-40 in theres as well. seams the shifting is easyer and the clutch is

better than ever.Had the notorious clutch hub :bang: nut problem and did a teardown and fixed it with the red locktite and inpact gun after CLEANING EVERYTHING. Just did my 5000 mile service with a service manual and the how :2thumbs: to's on here. "IF I'M WRONG ABOUT USING SYNTHETIC IN THE PRIMARY SOMEONE

PLEASE SAY SO". But like i said i haven't had any problems with it....
