Radium Dual Oil Catch Can Kit | 2011-2014 Ford Mustang GT (20-0324-FL)Crankcase Oil Catch Can Kit by Radium Engineering 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. The Radium Engineering catch can kits are the most functional and integrated kits on the market. The catch cans mount to the engine using