There is a pressure relief valve behind the oil filter. When the pressure is exceeded, the valve opens and some of the oil drains back into the oil pan.
The main oil channel branches off into the crankshaft bearing lubrication channels. Oil flows through inclined channels in the crankshaft to the connecting rod bearings. The piston bottom is cooled through nozzles that supply oil from below to the piston.
At the same time, engine oil flows through vertical pipes into the cylinder head, supplying oil to the camshaft bearings, valve clearance compensators and valve guides. Resistances on the drain ensure a guaranteed supply of oil for lubricating the specified elements in the cylinder head. In a 6-cylinder petrol engine, oil is also supplied through a valve depending on the need to the camshaft adjustment mechanism.
In addition, oil is supplied to the timing chains, and in the 6-cylinder engine, the oil pump drive chain is lubricated.
Oil consumption
In an internal combustion engine, oil consumption is the amount of oil consumed as a result of the combustion process. In no case should this be understood as oil consumption due to leaks through the oil pan, cylinder head cover, etc.
Normal oil consumption is due to the combustion of a small amount of oil in the cylinders, together with the removal of exhaust gases, and wear. In addition, oil is lost as a result of exposure to high temperatures and high pressures that occur in the engine. Operating conditions such as driving style and manufacturing tolerances of engine components also affect oil loss. Oil consumption should not exceed 1.0 l/1000 km.
Never fill the oil above the Max mark. If the oil has been overfilled, the excess must be sucked out. Otherwise, the catalytic converter may be damaged by unburned oil entering it.
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