LEYO Motorsport | Oil Catch Can Kit (Black)LEYO Oil Catch Can (MQB) Protect your engine by preventing excessive crankcase oil vapor entering the intake and carbon build up with LEYO Oil Catch Can Kit. Also known as blow by, oil vapor is produced under load, spirited driving elevates oil vapor level at an incredible rate, it is then circulated back into the intake tract resulting in carbon buildup of the intake valve, trapped oil residuals in both intake tract and intercooler. Unfiltered