Diff & transfer box oils

[mudski]

I'd be interested to know also, picking up a 2012 model with locker in the rear, so assume that the oil will be the same front and rear. 80W-90 all round I assume? Still researching the options, but sounds like the Penrite is out. What alse is being used out there?


Cheers,
Paul

Paul the rear diff requires 85/140. Reason behind this is becuase its the final drive and there is more, constant pressure on the diff gears. So this will heat the oil up quicker making it thinner. Using a heavier oil, the oil will stay thicker and within spec.

[pspeirs]

OK, thats another take on my solution and seems to make sense :-)
Playing devils advocate, would the engineers not have taken that into account when they spec'd the 80W-90?
Is there a particular brand to recommend for the heavier oil, assume also that it would not want to have any limited slip additive.

[nipagu7]

pspeirs . a 2012 model may have a factory locker in it , it will be easy to work out which diff you have once you have the car , if it has a lock diff it will have a button on the console / dash to engage/ disengage the diff , and as far as oil is concerned is considered an open diff . you can get normal or heavy diff oil for LSD or open diff's at most places that sell car oils . the heavy oils( 90w- 140 ) is more for heavy towing or perhaps if you live in darwin or regularly push the car hard .

[pspeirs]

Yes, it does have a locker in the back, its this that made me confused as to whether it was a GU7 or 8. My days of pushing too hard are probably done, unless of course I leave the wife at home (and thats a very real option). The other thing I'm trying to consider is that the histort of the vehicle is unknown apart from the regular servicing.