85w lube for trans

[gs46]

Is there any advantage or a reason to run Motul 85w trans lube in my Xtrainer ? Manual calls out 10w40 I believe....

[babelfish]

Use a ?W40 MA or MA2 for the transmission. You got a wet clutch there and that's designed to work with that oil.
A car oil might cause the clutch to slip due to their friction modifiers.

[nevermind]

Don't do that... Use the correct weight oil and not gear oil. Unless you like buying transmission parts/pieces and/or an entire motor if the case grenades.

[LRM]

I've only ran full synthetic ATF for decades in 2t and separate trans 4t. Nothing slips more than an automatic trams. No failures in a full list of bikes clear back to the late 70's.

[adamsrk15]

SAE-80 gear oil, specifically made for dirt bikes is equivalent to 10w40. I use Amsoil SAE-80 in my gear side. Motul even says you may substitute 80w gear oil in the gear oil side.