Some famous fictional characters with INFP personalities include: 1  Calvin, Calvin and Hobbes. 2  Anne, Anne of Green Gables. 3  Fox Mulder, The X-Files. 4  Wesley Crusher, Star Trek: The Next Generation.
Besides, the PCV valve also helps keeping the oil and the engine in proper shape extending their life as well. Also, its mechanism is very important for preventing the appearance of engine corrosion as well as it helps improving fuel economy. The PCV valve routes crankcase partially burned gases back to the engine.
the PCV is supposed to allow enough vacuum to the valve cover to cause a slight negative pressure in the crank case and suck out the blow by into the intake manifold to be burnt. the foam pad in the breather is to filter  the air that is being drawn into the crank case by manifold vacuum.