Car engine lubrication system BMW 5 Series E34

Engine lubrication system. General information
With all the efforts of constructive and production measures, more and more fully improve BMW vehicles and increase their service life, operational safety and...

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

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...

Engine oil viscosity
The viscosity of engine oil changes with temperature. As the oil heats up, it thins out. This affects the adhesion and pressure resistance of the oil film. As...

Universal (all-weather) oil
All-weather oil must be used for BMW engines. Multigrade oils have the advantage that they operate over a wide temperature range (summer Winter). The basis of...

Light oils
Light-running oils are multi-grade oils with an additive that reduces internal friction, which can save up to 2 percent in fuel. Lightweight oils have a low...

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

Engine oil specification
For modern engines, only HO oils are allowed. HD oils are alloyed oils whose lubricating properties are greatly improved by the addition of various chemicals....

Oils for BMW 5 Series engines
BMW prescribes the following oils: gasoline engines: Oil meeting the minimum requirements of CCMC-G4 or API SG. diesel engines: Oil meeting the minimum...

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 Pressure reducing valve opens at high...

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

Removal and installation of an oil crankcase
Withdrawal Disconnect the ground wire from the battery. Attention: When the battery is disconnected, the information in the electronic memory devices, such as...

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