What are the gear lube recommendations for a non-limited slip differential. I've played with the Search engine but as you well know, it sux. It appears that it needs to be a 75W-90 GL-5 lube which meets the BMW SAF-XO specification - whatever that is.

I was planning to go with an appropriate Redline or Royal Purple fluid but again, the compatibility specs are less obvious than ATF or engine oil specs.

I'm sure there are several good choices but at 80,000 miles on the original "Lifetime" gear oil, I think it's time for a change.

I know this had been answered dozens of times but I can seem to find a single one of them.

Your indulgence is appreciated.




Filehorse
Knoxville, TN
BMWCCA #407627

2002 525i Steptronic Sport/Premium | Build Date: 05/02
81,000 Ultimate Driving miles
Xenons
Style 81s | Bridgestone Potenza RE960 AS
Titanium Gray | Gray Leather
35% LLumar ATR LLumaStar tint
Valentine 1 | Hardwired
Steering wheel position memory w/Alzheimers
"Lifetime" ATF replaced at 40,000
StopTech SportStop slotted rotors w/Axxis Deluxe Advanced pads
StopTech SS Braided Brake Lines

2001 E46 325i (Jet Black) Forced Retirement 6/28/09

2001 E46 325i (Orient Blue) Forced Retirement 10/09

1989 E30 325i (Alpine White) Retired