I would check around to see what the success rate is for changing the tranny fluid with your specific tranny (ZF 5HP24?) and what people are using. Dex VI would probably not be my first choice unless many people using it successfully.

I think that specific tranny is well known for problems.

In any case, you may find it helpful to read through my thread: http://www.xoutpost.com/bmw-sav-foru...ed-bmw-gm.html