Have you replaced yours with in the last 60k? If not its a good idea. You won't not know it's bad till it's too late! It's always better to catch a potential problem in the garage than on the road!
This is the specific fluid that is used in the X5 models using BMWs xDrive all wheel drive system. Labeled as BMW as
"Non-Lifetime" fluid.
Home Page > ES#197388 Transfer Case Fluid - 1 Liter - 83220397244 - Used in models produced
after 10/2003 production date
Home Page > ES#251177 Dexron ATF (D4) - 1 Quart - 8352230504 - Used in models produced
up to 10/2003 production date
As always please let me know if you have any questions! Feel free to shoot me a PM or email.
Cheers,
Joe