I have a Quaife ATB helical gear LSD diff in my axle, and I was concerned to ensure I used the right oil, so I contacted them direct to ask the correct grade and type of oil to use. The reply I got was interesting:
"...One of the big benefits of the unit is that there is no friction
affecting performance and units can run in any lubricant, some of the
sealed units run in grease others automatic transmission fluid. The best
advice is to use whatever oil you feel best suits the crown wheel and
pinion and serevice as you would a normal unit."
So I guess it's the locking plate diffs that are the issue here?
