Yeah, info is pretty sketchy. (Although the label on the bottle does say "FULLY SYNTHETIC." And the car hasn't had any BMW fluid in it for a long time.) I'm a little nervous about it, but the mechanic has a strong rep in the local BMWCCA chapter, of which I am a member. I know he stands behind his work.
So far, after about 150 miles, the trans feels pretty good. For the first time since I've owned the car, I can't feel a little bump when the torque converter unlocks. Of course, that may be the result of the new flex disc. Or, the melting clutches have given the drivetrain a more fluid feel.