I just bought one myself. I have no idea how well they work but we will see.
Anyways, to sum it up a little: There is oil that goes through the PCV valve and back into your intake. The catch can is put in series with this line so the oil is caught in the can and not directed back into the engine. Think of it as a accumulator in a compressor in the garage. It is designed to catch the water so it doesn't go into the motor. Fluid goes in & only air comes out.
2006 Charger R/T
- Carbon Fiber LMI Hammer Intake - Boss 22's - Blastin' Bobs 7db Reso Delete - Tranzformer Shift Kit - K&N CAI - DiabloSport - inTune CAI Tune - BT Catch Can - Tinted Marker's - 10000K HID - Halo & LED Headlights - CF Vinyl Dash & Door Pillar Overlay