What is the function of an oil-gas separator?

1 Answers
LaCaroline
07/30/25 1:50am
The function of an oil-gas separator is to separate the engine oil from the gases expelled by the crankcase, reducing the amount of oil emitted from the crankcase breather to the outside of the engine. When the oil-gas separator is functioning properly, it only draws in exhaust gases and not oil. If the oil-gas separator malfunctions, it loses its ability to separate oil from gas, drawing in oil along with the gases. This can cause oil to enter the intake tract and combustion chamber, leading to oil burning. A faulty oil-gas separator may also prevent the turbocharger from engaging, resulting in poor acceleration due to the turbocharger's inability to function correctly. It is essential to repair a faulty oil-gas separator promptly. If left unrepaired, it may initially only cause oil burning, but prolonged neglect can lead to engine knocking and, in severe cases, complete engine failure.
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