I have been using Fuchs oils in my LandSpeed bike(turbo zx12), however there have been signs of stress to the bigend bearings,, am thinking of changing over to Brad Penn V2 because of the zinc content,, a mate of mine (car guy) has offered to supply me Penn Grade1 (10W 40),, has anyone on here ran this stuff, if so what effects did it show on the clutch, and general high rpm ware ???