Originally Posted by slacktide_bitog
You can use Maxlife with no problem, so you don't have to worry about that. The real issue is the stupid pan they used which has to be replaced! The ZF-brand ATF and the BMW-brand ATF are made by a third party, most likely Pento$in. Pentosin is known for their unreasonably-expensive fluids, usually for German cars. Expensive whether the label says ZF, BMW, or Pentosin on the bottle.
Shell makes a majority of the OEM ATFs for the German OEMs(ZF, Mercedes and Voith[which is used more for buses]). ZF Lifeguard 6 is also sold as Mercon SP, Mercedes uses Shell ATF 134 or 134FE. Lifeguard 8 and 9 are also Shell fluids, Lifeguard 5 is Esso LT71141.
Sure, use MaxLife - BITOG uses that like Frank's RedHot on everything and I'm guilty of it as well. But I feel "universal" ATFs aren't the end all be all. Stick to a OEM approved ATF on Euro transmissions. Unlike a Japanese or Korean tranny where you can get a low miles one from a wrecked car via LKQ or a wrecker, ZF/Benz units aren't cheap.