FWIW, I've been draining/refillng the fluid since 50k miles at every oil change with this penzoil fluid. it claim compatibility with LT71141.

2002 x5 4.4 has a zf hp25 tranmission. we now have 135k miles.

Pennzoil Multi-Vehicle ATF

it's inexpensive @ $40 for 12 quarts.

I can't find it at my local stores anymore!