Diagram of oil circulation in the engine
The illustration is for informational purposes only and may not fully correspond to the model in question.
1 - Cylinder head oil channel; 2 - Main oil line; 3 - Oil injection for piston cooling; 4 - Main flow oil filter; 5 - Oil cooler
Oil filter. 4-cylinder petrol engine 111
1 - Oil filter cover; 2 - Sealing ring; 3 - Filter element; 4 - Bypass valve; 5 - Idle valve; 6 - Sealing ring; 7 - Threaded plug; 8 - Check valve; 9 - Spring; 10 - Sealing ring; 11 - Cork
Oil filter. 6-cylinder petrol engine 112
[Material borrowed from an online resource mercedesman]
1 - Bolt, 11 Nm; 2 - Sealing ring; 3 - Fitting; 4 - Oil cooler; 5 - Sealing ring; 6 - Filter housing; 7 - Sealing ring; 8 - Oil filter cover; 9 - Set of sealing rings; 10 - Filter element
Oil consumption
In internal combustion engines, oil consumption is understood to be the amount of oil consumed as a result of the combustion process. Oil consumption should not be confused with oil loss due to leaks in the oil pan, cylinder head cover, etc.
Normal oil consumption occurs due to the combustion of a small amount of oil in the cylinders, due to removal with combustion products and wear products. In addition, oil is lost due to high combustion temperatures and high pressures that occur during engine operation. Oil consumption is also affected by external operating conditions, such as driving style, as well as manufacturing tolerances of engine parts. Oil consumption should not exceed 0.8 l/1000 km.
Never fill the oil above the Max mark. If an excess amount of oil has been poured, it must be removed. Otherwise, the catalytic converter may be damaged, since unburned oil gets into the exhaust system.