FOR BMW X5 X6 30d 40d M50d 8HP AUTOMATIC TRANSMISSION GEARBOX SUMP PAN 8L OIL
Many people are not aware of this, but the transmission is perhaps the most intricate piece of any BMW. It works in conjunction with other car components to handle the speedy acceleration of the BMW. The overall health of the transmission relies on two things: transmission fluid and the transmission filter.
Transmission fluid provides the lubrication needed to reduce wear on the transmission, and they also help keep it from overheating.