I am still using the Esso fluid sold by BavAuto.com. This is now sold under the Mobil 1 brand name but it is NOT the same as the Mobil 1 ATF sold in the USA. This Mobil 1 ATF is specifically made to ZF specs and sold in Europe. Apparently BavAuto.com is importing it...comes in a 1 liter bottle, not quarts.
I change both my AFT and diff every 30k miles since new. I had the ATF filter changed at 30/60/90, but now just doing the fluid only. I am at 152k now, and when I reach 180k, I will do the filter and gasket again. Since 90k I have been using Redline 75w-90 synthetic gear oil.
Factory M-Sport package with factory installed M-tech bumpers, factory Bluetooth, factory M-Audio 10" dual voice coil subs, Homelink, M5 rear stabilizer bar, Bilstein B14 PSS coil overs, Stop Tech ss brake lines, Akebono Euro Ceramic brake pads, oem Brembo and Zimmerman rotors, Dinan Stage 1 software, Strong Strut front upper stress bar.