Quick Question - LSD

[Stefan on probation]

Would anyone fit one to an automatic, the spec sheet says one was fitted but the tag on the diff has corroded so can't confirm?

[jimmyspeed]

could still be a slipper -

To identify an LSD one can first check for the presence of the tag on the rear casing. The ratio on this will be prefixed with an S for LSDs.
Alternatively one can jack up one rear wheel, ensure the car is out of gear and hand-brake is off then turn the raised wheel. Resistance on that wheel would usually indicate an LSD. An alternative method is to try to leave skid-marks pulling away on good tarmac, two tyre marks for more than a few inches would indicate a properly "locking" LSD. This won't work so well on grass or gravel as on loose surfaces both wheels can slip easier even for non-limited slip differential types.

[Speedtouch]

Or jack up both rear wheels and rotate one; the other will rotate in the same direction if it's an LSD, or the opposite direction if it's an open (normal) diff.