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E70Noob

04-24-2018 08:11 PM

Rear Diff and Transfer Case Fluids... buy BMW?

Hi all,

Whats the recommended brand of oil for our transfer cases and rear diffs? I don't mind buying the BMW stuff, but wondering if Mobil 1's version is any better a choice?

Correct me if I'm wrong but rear diff takes 75w-90 and the transfer case is 75w right?

Thanks in advance,

Cedric

AlpineD

04-24-2018 08:49 PM

Always oem with transfer case hear it from fanatics and techs alike

sunny_j

04-24-2018 09:43 PM

Quote:

Originally Posted by E70Noob (Post 1133273)

I just had both differential fluids and transfer case fluid changed last month.

You need 3 of these (1x front 2x rear)
https://www.bavauto.com/83-22-2-357-992

1 for the transfer case
https://www.bavauto.com/83-22-2-409-710

E70Noob

04-25-2018 01:35 AM

Awesome. Thanks fellas.

Entropy

04-25-2018 07:06 PM

Transfer case, absolutely.

0-60motorsports

07-30-2018 04:02 PM

Anyone know the front and rear diff fluids for the X5M?

sunny_j

07-30-2018 07:23 PM

no clue. look it up on ecstuning or bavauto. I would change the transfer case fluid at the same time.
https://www.ecstuning.com
https://www.bavauto.com

0-60motorsports

07-31-2018 02:20 AM

Quote:

Originally Posted by sunny_j (Post 1138385)

no clue. look it up on ecstuning or bavauto. I would change the transfer case fluid at the same time.
https://www.ecstuning.com
https://www.bavauto.com

Thanks, the info is confusing for a lot of people, I'll investigate this with my Tech today according to TIS etc etc and update post.

sunny_j

07-31-2018 12:09 PM

yeah I saw your post on another forum after

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