Sump-Oil separator

Operation:
When the gas with the liquid in suspension pass through the cartridges the small drops agglomerate in larger drops.  (Phenomenon of coalescence).

These drops become larger, therefore heavier, and separate from gas flow go down at the bottom of the filter.
They return then in the engine.

The purified gas comes out by the top of the apparatus.

Sump oil gas filter

Sump oil gas cartridges