Mwp1111 wrote:Phin,
What would you recommend?
I would recommend not running it.

MIP had their own lube for their transmissions but I don't know what weight it was. Eau Rouge, from that thread previously linked, is probably correct about the 5000 wt. lube. He would have a lot more experience running the gear diffs.
The instruction sheets also have some suggestions on which lubes to use...i.e. don't use AE lube, or go to a thicker lube if you want less diff action.