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More about Crankcase Ventilation

Crankcase ventilation removes pressure and oil vapor from the crankcase. In older engines, turbocharged setups, or under prolonged load, the original ventilation system may be insufficient.

Consider catch cans, hoses, valves, and connections. Pay attention to oil vapor, return to the intake or atmosphere, and how the system works under boost.

Proper crankcase ventilation helps reduce oil leaks, vapor in the intake, and contamination of sensors.