Hello, I am new here in the forum and immediately have various questions about my new used cars. It is about one: Mercedes 407d year 1985 2.4 suction diesel (the OM 616) 72ps with 67tkm tow truck with servo operating instructions no longer available. To my questions: Which engine oil should I drive? Üner google I found only one opinion and indeed the millers 10w40 xfe an opinion is too little for me.. Will the engine last long. When I open the bonnet I see two ste one for motor oil, the other has a relatively large lid is the one for the servo oil? Or for the injection pump which is also extra lubricated with some models. I will still make a picture of it.. I have read that the valve play regularly controlled or.. heard, how does this check or adjust and can make a layman do it? Another question that is not so important however.. Does anyone know how many liters the tank includes.. when transferring 20L refuelled and the needle was then over half.. Appeared to me as a little thank you in advance