[DPK]

For those who have the AWD version..I did some research and found that the Lube oils for the Transfer Case and the Rear Differential is Sythetic, 75w90...I'm going to drain/refill mine at 5000 miles with Red Line

 

[DPK]

Just to update;

I did the lube oil change..the job is quite simple..you need a 10MM hex allen drive bit to remove the drain plug and fill plug..

A hand lube pump

and about 2qts of lube oil..as stated..I used Red Line 75w90 synthetic gear oil...

The rear differential is a little tricky pumping it in the fill hole, but if you go slow, you get about a qt in before it starts to dribble out.