Hello together ! My 97`er Seven Fifty, mileage 30tkm, causes problems. At an oil temperature from approx. 80 °C you can hear a strong clacker from the cylinder head in the stand and at idle speed. When giving gas it disappears, as well as the engine in the cold state completely calm. Power loss or other problems do not occur. Oil change is done regularly and with the partlyynt. 5W40 I had good experiences. I already typed on defective hydrostumps, b but not sure in me. Maybe someone knows the problem and can help me. I would be very happy about an answer.