Expert's advice:
“The Mishimoto BMW N54 Baffled Oil Catch Can is designed and engineered to reduce carbon buildup, a common issue with the direct fuel injection N54 engines. It uses the proven engineering from 2-Port Compact Baffled Oil Catch Can with a 50-micron bronze filter and an internal baffle to better separate the oil from the crankcase vapors.
The CNC-machined lid features large inlet/outlets to match the inner dimension of the CCV hose. This baffled oil catch can defends your intercooler, intake system, and VANOS system from oil blow-by and help maintain proper octane levels to reduce potential detonation.
The kit comes with two direct-fit hoses, which require no modification to the engine cover, and one direct-fit mounting bracket that is extremely easy to install and mounts the can in a serviceable location! Two aluminium, 3/4" barb fittings connect the hoses to the can.
The Mishimoto catch cans are different from most air-oil-separator (AOS) systems on a few levels. First, theyr catch cans are not heated. This means that all of the blow-by is able to condense in the can, including low-octane oil vapors and contaminated fuel vapors. Most AOS systems also drain the blow-by back into the oil pan, while the Mishimoto ones catch cans trap the blow-by and keep it out of the engine permanently.“
Mark Hendrikx - Automotive engineer at Mosselman
