Post by
szh »
https://forums.nicoclub.com/szh-u149.html
Tue Mar 27, 2012 3:48 pm
We have detailed pictures of the differential fluid change process in some thread here - although it was for a G, it applies equally easily to the M. Might need to do a search for it.
In your AWD situation, the front differential is done the same way - more or less, afaik. The diagrams in the maintenance PDF should be sufficient, I would think (but not sure since I have not actually changed oil in any front differentials - my M is not AWD).
Use 75W-90 (or 75W-140) Mobil 1 Synthetic Gear oil for the differentials. Please do confirm this from the maintenance manuals, of course (link to them is in my sig below).
Z