Car engine lubrication system Mercedes S-Class (W126)
Purpose and properties of motor oils The tasks of engine oil According to the operating conditions, engine oils must meet changing requirements. Therefore, it is very difficult to accurately determine the...
Oil pressure relief valve — removal and installation The pressure reducing valve is located at the front in the main oil line and opens at an overpressure of 5 bar (engine type 110). Depending on the location of the units...
Oil pump — removal and installation Removal and disassembly Remove the sump or the bottom of the sump. Remove mounting bolts (arrows) on the cylinder block and on the crankshaft bearing cap. Remove oil...
Oil filter — design description The oil filter is a full flow paper filter. The filter is screwed in at the bottom left of the cylinder block. With 6-cylinder engines, it is best to get to it from...
Oil sump — removal and installation 6-cylinder engines Disconnect the oil return line at the oil sump. Loosen the 6 bolts of the protective pan on the cylinder block and remove the pan. Turn the front...
Oil temperature thermostat — removal and installation A working thermostat can only be removed at temperatures below 60'C, as otherwise the pressure rod will be squeezed out. Under no circumstances must the pressure rod be...
Oil cooler — removal and installation Drain the oil from the oil cooler by loosening the union nut on the oil hose. Loosen the mounting bolt between the oil cooler and the bottom of the radiator. Pull the...
Engine oil change Install the oil drain bolt with a new O-ring. Pour new oil into the neck of the cylinder head cover. If removed, install air filter. If it has been fixed, release the...