Since I got the 300D, I have changed the oil and filter in the engine - WIX filter - no new "O" ring as the one they send with the filter does not fit the MB. No new small "O" rings on the engine part that I hear referred to in regard to oil pressure guage fluctuation.
Used Shell Oil - 15W40. No fancy synthetic until I replace the valve cover gasket as it appears to leak at the back of the engine. Also replaced the air filter element with a WIX brand unit. That is it so far. How do I know when the fuel filter(s) should be attended to? Seems to run fine (but I am no expert on these things either). If I recall various posts, there is a screen in the tank ( I assume is removed by unscrewing the plug in the bottom of the tank - recent talk of using a spark plug socket to fit the large allen wrench hole??). I also see what I assume is a filter housing under the hood with a drain plug near the bottom. Do I have to bleed this thing in some manner if I change it so that it doesn't pump air into the injector pump?? Fill me in or point me in the right direction. I have no previous Diesel history whatsoever. I have wanted a Diesel Benz for a long time and am now thinking I might look at the Dodge trucks with a Cummins as well. Randy in Winnipeg
