View Single Post
  #4  
Old 02-23-2014, 04:57 PM
nhra nhra is offline
Dodge Ram Forum Senior Member!
 
Join Date: Oct 2013
Location: chicago,ill
Posts: 172
Gender: Male
Vehicle: 2014 Crew Cab Granite Crystal
Rep Power: 0
Rep:10
nhra is on a distinguished road
Default

Pressure from the crankcase is routed into the throttle body for emissions. It contains a slight amount of oil that eventuly ends up in the intake manifold. The catch can removes this oil from entering the intake manifold, keeping it cleaner.
Reply With Quote