Limited Slip Diff on 1992 GQ Patrol

Couple of methods:
1. Put one wheel on grass, and the other on tar, drop the clutch, if the wheel on grass continues to spin, its not lsd
2. Jack up rear axle, so both wheels are off the ground, rotate one wheel by hand, if the other wheel rotates in the same direction, its lsd, if its the opposite direction, open diff

Should have LSD anyway unless its a locker - change the oil if its not working If serious offroading use Penrite Limslip 140 (not 85/140 but 140 patrols/mavericks have the only lsd worth owning and the only one 140 is reccommended for) and youll be impressed and you r diff will work better last longer work quieter and not chatter.
( www.penrite.com.au )
happy 4wding
kezza

Thanks for your replies and suggestions. I am keen to know the abilities of my car before I get myself in any overly awkward situations (at this point we have only done moderate beach and track 4Wding). Is it only the rear diff that is LSD, or the front as well ? Thanks again.