I serviced my xDrive transfer case today - ATC500. Fun little task.
Used OEM "unicorn juice" - DTF-1. The local dealer gave me a good price, so my kids will be able to eat this week after all...
Also bought a fluid pump - which made this task SO much easier.
After changing the fluid I fired up the laptop with DIS and ran the transfer case oil change task, which resets the oil wear adaptation values. Whir, click, buzz.... Done.
Boy, is this thing SMOOTH now.
It's always had a subtle "shudder" in the driveline when under high torque at low speeds. Felt like a grabbing clutch... Stop on a hill, them move off briskly and you could feel a slight driveline shudder. Turn sharply from an intersection when you've had to stop and it felt slightly rough and "graunchy"... but only very slightly.
Not anymore! Butter smooth... just wow...
