A Positive Crankcase Ventilation (PCV) system provides a continuous flow of fresh air through the crankcase. This system helps relieve pressure and prevents the buildup of corrosive contaminants by allowing harmful gases to be expelled and fresh air to enter. By promoting better combustion and maintaining optimal engine performance, the PCV system also contributes to reduced emissions.
A crossive is really dangerous and it could burn your skin!!
If you spill a corrosive material on your arm you should wash the area immediately.
I believe that when chlorinated water splashes on the limestone, it will create a crossive environment that may be adverse to the metal wall.