Radium Engineering Catch Can Kit Crankcase 2016+ Focus RS Fluid Lock - 20-0316-FLOVERVIEW These catch can kits mount on the back LH side of the engine bay. This catch can runs inline with the crankcase breather port. At low loads it experiences atmospheric pressure, but when the engine is at high load (WOT), this hose will experience high flow out of the crankcase. This would normally lead to oil and sludge accumulation in the air filter intake pipe. Oil accumulation will occur in the intercooler which lowers the thermal