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Old 04-02-2003, 01:19 PM
Registered User
Join Date: Apr 1999
Posts: 2,632
I use SWEPCO 201 80W-90 in our limited-slip diff.

Wears better than Mobil 1.

The Porsche Club swears by it, esp. for MB tranny's (928 automatic used a MB tranny).

I track both cars, and my mechanic who races Subarus and Pro-Spec 7's has been converted as well.

:-) neil
1988 360TE AMG
1993 500E
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Old 04-02-2003, 01:46 PM
Registered User
Join Date: Oct 2002
Location: Colorado Springs
Posts: 481
differential fluid

Okay, did a search nothing conclusive. Is anyone using mobil 1 gear oil for the limited slip differential. I have only seen people using redline so am curious as I use mobil 1 for the tranny and engine both of which seem very happy with it.
Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)
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Old 04-02-2003, 02:16 PM
Registered User
Join Date: May 2002
Posts: 40
mobil 1 synth

in my experience has saved many land rover transmissions and diffs after knocking holes in them on the trail ..diffs with or without lockers. Some lSD's may specify a specific gear oil for use.. go to and do a search on Mobil 1 for an overload of user info. or
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Old 04-03-2003, 12:02 AM
BoostnBenz's Avatar
Benötigt Mehr Druck!
Join Date: Aug 2002
Posts: 1,855
When I bought both the 83 & 84 the boots where all cracked up, within a small amount of miles the boots tore and the oil flooded out. So I rebuilt the axles and noting that inside the differential was quite dirty from metal & the fluid was pretty old, possibly original, I searched for a good temporary oil. I found a thread here about how Mobil 1 synthetic cleaned their diff out. So Mobil 1 I bought for both as temporary fluids, figure I'll leave them in for at least a few thosand miles then drain it and put the redline in. Mobil 1 is fine and dandy in my book, but I still like Redline better for differentials.
Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k
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