Hello, I’m looking for your advice again. Had already asked in another thread because of abc problems. Meanwhile, the pump, bull eggs and valve unit have been replaced at the rear and the level sensors. The deeper laying of the previous owner corrects thus again to normal level. The car sinks at the front wheels and the solution would be a valve block (mistake clearly recognized by mb and rude workshop) error code c3115 as far as I know. Now to my question It was initially rinsed and the black oil removed with the egg (several times rinsed until no more abrasion came ) now the oil is green again. The car drives well during the ride no problems. However, I read at hans hehl that once the oil was so black with abrasion that you can never get that again and now ask me if it makes sense to keep the car and still exchange the valve unit and o-rings. Is it assumed that you can’t get it anymore or how would you v Does anyone have experiences? Is this really so that you have to change everything when the oil was so black? Would he like to drive for a long time the car has 100t km and is otherwise always a staple. I only have to remember that there are always problems after the flushing and the exchange of various parts.Last at mb mannheim the abc control unit was changed. The pump was not broken but loud mb at the break that means she had not disassembled wu However, it was exchanged. Many thanks in advance to Thorsten