Radium Fluid Lock PCV Catch Can Kit - Mitsubishi Evo 7-9Radium Fluid Lock PCV Catch Can Kit Mitsubishi Evo 7, 8, 9 An oil catch can is essential on any performance vehicle to protect the engine from elevated crankcase blow by accumulated during aggressive driving. Excess oil saturated air recirculating back into the intake stream degrades combustion efficiency, fouls intake valves, and can cause detonation especially on boosted platforms like the Mitsubishi Evo 7, 8, and 9. The Radium Fluid Lock PCV Catch