ok, so I've spent hours searching and all the info is pretty spread out. For a 2005 X5 4.8is, fluids & parts follow:

Front & Rear Diff: 75w-90 gear oil (1.3 qts front, .8 qts rear)
Transmission: ZF Lifeguard6 oil (??? qts), Filter - 24 11 7 543 550
X-Drive Transfer Case: OEM X-Drive Transfer case fluid (just under 1L)

Is this correct?

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