I found something.
The ESP has a control opening on the side. Through this opening, you can access the old oil.
suck up.
It is then topped up with oil until it just starts to leak out of the screw.
Gruss Oliver.
GolfIII,1Z,66KW,von94 mit 500tKm !
Polo 6N,AEE,55KW, von 96
Audi A4 B7, BPP von 2006
Okay, so the Allen wrench size needed there is a 10mm, and that's where you refill it.
until oil leaks out at the rear lower screw.
The screw should be turned out about 3 rotations.
As far as I know, it takes about 400ml of oil.