That acts like a maze to collect and condense the oil vapor. Our test proven design incorporates a stainless steel mesh and screening mechanism While that simple design may trap a few oil droplets, our Catch Can is designed to condense the oil vapor and trap the oil inside the container. Most Catch Cans on the market are just comprised of an empty container with 2 ports. Not all Catch Cans are created equally ! Often Imitated, never duplicated. But in the end the steel wool is not so much as acting as a filter as it is acting as an extra physical barrier to hold the liquid down.Д¬lick to expand.Cheape non effective 'empty box' catch cans(lol) may have low restriction, but the ones that really work have some restriction.Thats why I would be inclined to just drane the oil out of the air box connected to the intake runners periodically because I would not want all that blowby to muck up the oil thats tring to preserve what life is left in that worn engine. Now, you want to use the coarsest steel wool obvsiously, as #0000 steel wool will create a restriction. Steel wool isn't densely packed like an actual filter that it would impede the flowrate of whatever going through it. Catch cans are small enough that after a few seconds of operation the pressure in the bypass system will normalize and things will behave like normal.Д®ven if you use steel wool there is hardly any restriction on the flow. And no, an argument of pressure differentials will not suffice. Obviously the OP knows how this works, since its rather very simple. It's simply a tube dumping into a chamber with a low bottom, and an exit up near the top. oil has a higher specific density than air! Instead, they rely on basic physics to separate liquid (oil) from gas (air). Oil catch cans don't have filters of any kind in them. An oil catch can system is NOT a restrictive bypass of the PCV system.

How to install oil catch can honda