For sale is a custom catch / breather tank. This will prevent oil from escaping and remaining inside the catch can. The port at the top of the can is a tube which has internal baffling built into it.
AN10 Baffled Aluminum Breather Tank Oil Catch Can Black Dual Front
Baffled Aluminum Breather Tank / Oil Catch Can Tube 3 Port -10 AN
12AN Aluminum Breather Tank Oil Catch Can Black Dual Front
Baffled Aluminum Oil Catch Can with Breather Tank Filter 10 AN Dual Left
AN10 Aluminum baffled oil catch can breather tank with drain valve Dual Right
Black Baffled Aluminum Oil Catch Can with Breather /w Filter Kit 10 AN
