Car engine lubrication system BMW 5 Series E34

Engine lubrication system. General information
Despite all efforts to improve BMW vehicles more and more completely and increase their service life, operational safety and economy through design and...

Purpose of motor oil
During operation, engine oil is exposed to a wide variety of influences. Therefore, it is very difficult to accurately determine the effect of various...

Features of gasoline engines
When an over-rich fuel mixture enters the cylinders, or when the engine is rarely or never required to develop its full power, or when the engine is often...

Viscosity of motor oil
The viscosity of motor oil changes with temperature. As the oil warms up, it liquefies. This affects the adhesion and pressure resistance of the oil film. When...

Universal (all-season) oil
BMW engines must use all-season oil. All-season oils have the advantage of working in a wide temperature range (summer/winter). The basis of all-season oil is...

Light-duty oils
Low-viscosity oils are all-season oils with an additive that reduces internal friction, which can provide fuel savings of up to 2 percent. Low-viscosity oils...

Application ranges/viscosity grades
Black - oils for diesel engines; white - oils for gasoline engines. Since the application ranges of seasonal oils of adjacent SAE classes overlap, short-term...

Specification of motor oils
Only HO oils are permitted for modern engines. HD oils are alloyed oils, the lubricating properties of which are significantly improved by adding various...

Oils for BMW 5-series engines
BMW recommends the following oils: gasoline engines: Oil that meets the minimum requirements of CCMC-G4 or API SG grade. diesel engines: Oil that meets the...

Lubrication circuit
1 Oil pressure switch at the end of the lubrication circuit 2 The bypass valve opens when the oil filter is clogged 3 The pressure reducing valve opens at...

Oil consumption
In internal combustion engines, oil consumption is the amount of oil that is consumed as a result of the combustion process. Oil consumption cannot be equated...

Removal and installation the oil pan
Removal Disconnect the ground wire from the battery. Caution: When the battery is disconnected, the information in the electronic memory devices, such as the...

Removal and installation the oil pump — engines M20, M30 and M50
Removal Disconnect the ground wire from the battery. Caution: When the battery is disconnected, the information in the electronic memory devices, such as the...

Diagnostics of engine lubrication system faults

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