If you find oil in your intake manifold, it's not something that should be ignored, but what has caused it isn't always clear ...

You take your car in for an oil change. The work is almost done when the technician comes out to talk to you. Hes holding your air filter and PCV valve and recommending that you replace both ...

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 ...

The PCV valve is part of your car’s emissions control system. PCV stands for positive crankcase ventilation, but what is the crankcase, and why does it need to be ventilated? In simple terms, ...