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      08-25-2011, 10:33 AM   #23

AlanAZ's Avatar
Drives: E90 325i sport manual
Join Date: Aug 2009
Location: Scottsdale, AZ

Posts: 798
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On the gear oil weight.

Per the BMW TIS:

(USA) E9x N52 engines ('06-325i/330i, 328i,) rear diff is designated 188L/188LW and takes SAF-XO (75w-90) with a 1 liter fill.

(USA) E9X N54 TT engine [and the M57TU (335d)] rear diff is designated 215L/215LW and takes SAF-XO (75w-90) with a 1.2 liter fill.

Bentley: SAF-XO for 325-335.

Per the Castrol Spec Sheet:

SAF-XO (75w-90) for Open Diffs. (325 - 335)
SAF-XJ (75w-140) for LSD Diffs. (M3)

Last edited by AlanAZ; 04-08-2012 at 03:14 PM.