I recently took my car to the dealer for a transmission fluid change. The charge was $1100, and they informed me that this was simply a "pan drop" change, and even though some fluid would remain in the TC and other parts, ~5 liters would be replaced. I've attached a portion of my receipt from the procedure, which seems to indicate that only two liters of fluid was replaced.
Is this normal? How many liters are in the 335i transmission total? I can't imagine why the dealer would choose to replace less fluid when i'm happy to pay for the full 5-6 liters...