[Hrc630]

Yesturday i have clean my ZForce and i have seen oil the engine. The oil came from the vent tube from the rear diff that is attached over the engine head.

Anyone have ever seen this ?

[NMKawierider]

No but that means it either has water in it, it is getting very hot for some reason, it's very overfilled...or you have had it on it's side at some time.

[Hrc630]

No water and the Level is fine.
1000 km on that Motul oil .
I will change it tonight and check it on my next ride

[RickConnors]

I’m having the same issue with mine. Just curious if the diff oil change you did fixed the issue?

[NMKawierider]

I’m having the same issue with mine. Just curious if the diff oil change you did fixed the issue?

Change it...and don't over fill it.