Can we all just be clear.
There is no such thing as lifetime fluids.
This is BMW marketing BS to convince you that it will last forever, so when it breaks down catastrophically after your MP or warranty, they can say "tough luck old chap".
This is the same for the cars CBS service, which has stretched the service intervals to lower the cost of servicing the cars and maintaining them while theyre on BMW dime.
There is no other benefit to this than money saving for BMW, and expense to you for the long term.
If your car is what you would consider old by any stretch take it to ZF and ask them to check and make sure your fluids are within spec.
Blood is also lifetime fluid.
We are going to Ampath and Lancet to check that fluid from time to time, to prevent BS and headaches down the road.
Same same, but different, but same.