Recommended gear oil
SHELL SPIRAX AX (API GL-5, viscosity SAE80W-90).
With the vehicle parked on a level surface, remove the drain plug and drain the oil from the transfer case.
Pic. 3.47. Transfer case drain plug
Replace drain plug (pic. 3.47).
Remove the fill plug.
Pour the required amount of the recommended oil into the filler hole.
Install the fill plug in place.