Positive Crankcase Ventilation

Clean air being drawn into the primary turbocharger when the engine is running creates a vacuum in the ventilation tube and hose assembly. This vacuum in turn creates a vacuum in the engine vent oil separator and draws gasses from the crankcase and camshaft covers into the engine vent oil separator. The gasses are circulated around the engine vent oil separator, allowing oil particles to be separated from the gas. The gasses are drawn into the ventilation pipe and are mixed with the clean air being drawn into the turbocharger. The oil drains out of the engine vent oil separator into the oil pan.