|
I have not done a transmission oil change on the 8 speed ZF but I have done it on my E90 6 speed ZF. The oil level MUST be flush with the side plug while engine running and car is level.
To do this, my car was jack up and secure, a ramp for the front wheels and 2 jack stands in the back. I used a funnel and attached a long clear hose. I was able to fill the transmission from the top of engine bay while engine running. When the level was right, car still running, I went under the car, disconnected the filling hose and installed the plug.
If the engine is off, oil level will appears to be too high.
|