Transfer Case / XDrive Fluids?
 

Anyone know what transfer case fluid our trucks use?

dextron III AT trans fluid

I seem to recall that Dextron III is only for pre-XDrive transfer cases...
I believe that XDrive models require a slightly different fluid.

Dlrs have it as PN BMW transfer case oil - TF 0870, and from perusing,
I don't think there is a substitute.
GL,mD

true - sorry, I didn't look at what year. I have pre X-drive. I just replaced my transfer case and front / rear diff fluids a few weekends ago.

From TIS:

When should this be done? After how many years also are all facelifted models X drive?

Yes, facelifted models have X-drive.

There was a comment in TIS that in case of fault code 54C6 transfer case oils should be changed. No idea of normal schedule, though.

How many quarts do I need? Thanks

http://c1552172.r72.cf0.rackcdn.com/615419_x600.jpg

Judging by the picture on ECS, you only need 1 quart. Facelift models need the BMW fluid and should reset the adaptations via DIS after fluid change.

Personally my driveline fluids get swapped every 50k, its cheap insurance to do so (diffs, manual trans, transfer case)

I had mine changed at purchase, 81k miles, given absence of evidence of earlier changes. Redline, plus the lubromoly gear lube, in the diffs, bmw in the xdrive, and redline in the manual tranny ... as many miles as I'm putting on mine, I may wait til 150k, instead of following RB's very reasonable suggestion of every 50k miles ....

I have 01'3.0 AT with 194K trouble free drivetrain miles. Do mine every 60-70 tranny and others 100K . Thing is I can't remember the torx size for the front and rear diff fill n drain plug. Also, my bimmer guy said it's now DexVI that's replacing the orig.II & III. Anyone concur? The transfer case uses a liter of the same AT fluid. Thanks.