Quote:
Originally Posted by PR1AWRet
I run synthetics in the engine (5W30), transfer case (ATF+4), and differentials (75W90). Any major brand. If differential oil says it has the added ingredients for limited slip you can still use it without any problems.
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Only pre-facelift cars (1999-2003) can use ATF in the transfer case - the later model XDrive cars require the special BMW fluid.
For all diffs though - this: -
https://www.redlineoil.com/product.aspx?pid=133&pcid=4