The never ending cycle causes a tar-like build up in the intake system and results in reduced air flow to the engine. This process creates a wet surface for the exhaust soot from the EGR to cling to. How does an oil catch can help my engine?įrom new, whenever the engine is running the intake system gets lined with oily residue created by blow by and passed through the PCV (positive crankcase ventilation) valve into the engine inlet. It is designed to remove the oil from the blow-by gasses and prevent them from entering the intake system. What is an oil catch can?Ī catch can is essentially an oil separator. We consider an oil catch can a necessity for any modern turbo diesel engine however most turbo vehicles (new or old) can benefit from having an oil catch can installed. Blow by gasses refers to combustion gasses that leak past piston rings and into the engine crankcase. The combination of forced induction (turbo or supercharger) and higher compression ratios in diesel engines increase the amount blow by gasses produced. The end result means oil vapor and exhaust fumes are vented into the intake system. This process in conjunction with the EGR (exhaust gas recirculation) helps engines meet emission standards. Do you own a turbo vehicle? Installing an oil catch can is essential for engine longevity.ĭue to strict emission regulations, late model engines require all crankcase fumes to be burnt through the combustion cycle, not vented to the atmosphere.
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