I'm fairly confident that all 4x4 Lux's came with an LSD rear
want to know?
If your LSD sticker has fallen off or your just unsure simply jack the rear diff so both wheels are off the ground.
Then turn one wheel on one side and if the wheel opposite turns in the same direction it's an LSD.
If the wheel opposite turns in the opposite direction it's an open or normal Diff.
Edit: ensure not in gear or park - tail shaft must be free - also please be careful doing this at home safety first !
For the record mine has over 100k on it and still works very well - I can only put it down to regular oil changes and good quality high pressure oil like Mobil 1 LS 90.