Thread: D4 Transfer & Diff Oil Question

Also - I should have mentioned - the book says to put in those amounts - however in my experience it is close enough to just fill to the bottom of the fill holes as long as the vehicle is level. Everytime I have done mine (the tfr case every 80,000km) and the diffs every 24,000km it has worked out to be only a few mls in it - slightly over.

Garry

Originally Posted by 101RRS

Because the tfr case is pretty unique and I don't believe Penrite make anything compatible. Remember the tfr case is nothing like a simple gear tfr case like the LT230 - There are other compatible oils from other companies but most cost about the same as the genuine LR oil.

Yep - like 101RRS said - the transfer case has an electronically controlled multi-plate wet clutch in it to provide centre diff locking and torque biasing function (for control of off road performance and on road comfort for example when parking). The LR specific oil (and the Royal Purple alternative) would be specified with the wet clutch in mind.
Matti