An oil catch can catches or prevents the oil from re-entering the intake tract. A catch can is placed right after the PCV and before the intercooler. This means that a more pure (sometimes 100% pure) air mixture will go through the intercooler and intake valves. A more pure air mixture entering the intake valves...

What is a catch can, and what do they do? By nature some oil, fuel and even water escapes from the motor during normal operation and ends up in the crankcase. In standard form, this film of oil is sucked back through the positive crankcase ventilation line (PCV) and ends up in your air intake,...

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