The Moroso Air/Oil Separatoris plumbed into the PCV system between the crankcase and vacuum source. To prevent these potential issues, Morosooffers an air/oil separator. In some cases, it can even cause harmful detonation. Although you might not notice any performance loss in a stock engine, the excess oil included in the intake charge can lead to reduced combustion, fouled spark plugs, and less overall power output.

Once the air pressure is drawn out of the crankcase, it is reintroduced into the intake charge as it enters the engine. While PCV systems play an important role in engine operation, they do create a negative side effect, particularly in high performance applications.Īs PCV systems suck the pressure out of the crankcase, it also draws out a fine mist of oil which is then included in the air/fuel intake charge. These systems alleviate combustion pressure from an engine’s crankcase by using engine vacuum to suck the pressure out of the crankcase. Positive crankcase ventilation (PCV) systems were created for a reason.

Aig air oil separator review