Diff Oil?

[MercuryRises]

Gents,

I have an E46 M3, BMW have advised that it would be a good idea to upgrade the oil in the rear diff due to a "graunching" (their words, not mine) sound when turning tight corners (in carparks for instance)

Predictably, BMW have also advised that I need to part with at least a Kidney in order to pay for said diff oil change.

If, hypothetically, I was a tight bd with a lot of free time, what would be the best oil to put in my Diff?

Please note, I have no idea what oil is in there at present, I assume it's the original stuff, I can't find any paperwork stating that the previous owner (I know, I'm a peasant) had changed it at all.

Thanks for your time and help.

Del

[helix402]

http://www.opieoils.co.uk/p-736-castrol-syntrax-li...

This+friction modifier from BMW.

[nick1275]

helix402 said:

http://www.opieoils.co.uk/p-736-castrol-syntrax-li...

This+friction modifier from BMW.

Opie do a friction modifier too, used it when I did my diff seals earlier in the year.

[gaz1234]

nick1275 said:

Opie do a friction modifier too, used it when I did my diff seals earlier in the year.

ste.
Use bmw oem.

[Krupp Stahl]

It should've been changed at each Inspection II. From my paperwork, they use SAF-XJ, Part no. 83 22 2 282 583

Edited by Krupp Stahl on Saturday 20th December 19:21

[E30M3SE]

Krupp Stahl said:

It should've been changed at each Inspection II. From my paperwork, they use SAF-XJ, Part no. 83 22 2 282 583

Edited by Krupp Stahl on Saturday 20th December 19:21

[gaz1234]

E30M3SE said:

Cheap!
X3...