Crankcase breathers play a big role in reducing diesel engine emissions by recirculating blow-by gases back into the engine.

If you have been wondering what a PCV valve is, how it works, how to replace it, and how much it costs to repair, we have you ...

Think of an oil catch can as a tiny quarantine ward spliced into your engine's positive crankcase ventilation (PCV) hose.

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...