One such vital part that helps deal with gas that finds its way into the crankcase is the PCV valve — or positive crankcase ventilation. According to J.D. Power, the PCV valve has been a part of ...

What is a PCV Valve? Save money on your next oil change by checking your air filter and PCV valve yourself and save unnecessary replacements.

Separating the crankcase from the intake manifold, which is a source of varying air pressure, the PCV valve maintains the optimal level of vacuum in the crankcase to extract the products of blow ...