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LSD Lube ?[200/1993] posted by remi on
Tuesday, 4 May 1999, at 12:41 p.m.
My 1993 245 is equipped with Limited Slip Differential rear end. What type lubricant is indicated? Bentley's says "requires a differant lubricant than the standard differential..." but no specifications. Any recommendations would be appreciated. Thanks.
Remi
1993 245 134K
--remi
Re: LSD Lube ?[200/1993] posted by SteveRinglee on
Tuesday, 4 May 1999, at 2:46 p.m.
You can buy any 85W-90 lube that says that it is OK for limited slip differentials. I use Castrol Syntex 85W-90 which works in my LSD and is so noted on the bottle. Note that the Mobil 1 synthetic differential oil is NOT rated for LSD. Alternatively, you can buy an additive to bring the lube to LSD specs. Any auto parts stores will have either one.
Re: LSD Lube ?[200/1993] posted by Skip on
Tuesday, 4 May 1999, at 4:37 p.m.
Just one man's opinion but I wouldn't put anything in my LSD except Volvo LSD lube. I installed a complete rear axle with LSD from a '83 GL into my '80 DL. When I replaced the gasket I had to refill the rear and used LSD lube from the local Parts America. The rear started to bind, chirp and slip. All sorts of evil stuff. At the recommendation of another B'boarder I replaced the lube with the proper Volvo lube. All the problems went away even under heavy use like dirt road rallies. Why? Who knows?
Skip
Re: LSD Lube ?[200/1993] posted by abe crombie on
Tuesday, 4 May 1999, at 9:05 p.m.
Your diff is an auto locking diff which is technically a different animal from a limtied slip. It specifically needs regular oil with no additives. It does not have clutches in constant application which need a friction modifier (sort of the oil version of slimy snot) to keep the clutches from stick-slip which causes chatter and undesirable noises on turns. The application of the ALD relies on the clutches getting some "grab to take them to full engagement when the wheel spin triggers a small centrifugal fly weight to spin outard enough to catch a lock pawl and make two ramped surfaces walk apart and apply pressure to clutches. Lubes with the friction modifier would allow slip during this engagement period. The friction linings on an ALD have clearance when it is not active so the special oil is an answer to a question which will never be asked by an ALD.