Just remember: Lubrication is the Key.
I use Castrol Synthetic in my R100RS and das beast. Mojo, my '66 R60 only gets 20w50 Castrol... synthetic leaks out of it, dynojuice does not.
It sure is cheap insurance...
'66 BMW R60/2, '83 BMW R100RS,'81 BMW R100RS "Das Beast", '87 BMW R850R '77 Honda XL125