Originally Posted by
Italboy
Thank you Dan
I wondered why on the TQ they put in heavier diff oils - should be normal with the new diffs.
The new diffs need about double the diff oil weight than the old diffs to get the same feel. So if you ran 60K in the old rear diff then you'd now need 120-150K oil in the new diffs. Its just down to the new configuration and gear pattern of the new diff design.