Radium Engineering Catch Can System for 2013+ Ford Focus ST/RS

 Though both cans are recommended, the PCV system is more important than the Crankcase side. The crankcase side can be added later, but you can do a test to see how much oil you are getting in your stock intake inlet tube. Pull the hose off the back of the intake and stick your finger inside to see how much oil is in the tube. If you get a drop on your finger it is recommended to add the Crankcase system as well. If you get just a small amount/residue/smudge on your finger you are good.  Click Here to download installation instructions.An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by accumulated from high performance driving. Excess oil saturated air circulating back into the air intake stream can lead to degraded performance. Read about all the benefits and functionality of the Radium Engineering's popular catch cans here:All Radium catch cans provide the following benefits:-Effectively raises the octane and increa