I had the standard diff on mine and shat one of the LSD pins out and damaged my whole diff.
When I first got my lux the LSD was ok but didn't lock all the time. Replaced the LSD for the ARB.
Traction onroad is a bit poor (expecially in the wet) but offraod the locker works sweet! Never had a problem with the locker leaking oil or anything else.
I now have one for the front too.
The front cv's don't like it when they are hammered with the front locker.
I suggest running with only the rear one on when offroad. If you get stuck engage the front locker. Gently drive out or up
and then disengage the front.