A positive crankcase ventilation system routes pressurized crankcase gases back to the intake manifold to be burned during combustion. All those unburned gases flowing through the PCV valve, however, can create deposits and cause it to stick, which can increase oil consumption and even reduce fuel economy.
Using high-quality oil is essential to keeping your PCV valve working properly. Watch this video to learn more.
https://www.amsoil.com/?zo=278060
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