- First Name
- Sam
- Joined
- Aug 20, 2021
- Threads
- 24
- Messages
- 168
- Reaction score
- 314
- Location
- Earth - Northern Hemisphere
- Vehicle(s)
- 1984 Mercedes Benz 300D Turbo
- Engine
- 2.0L EcoBoost
Excellent Write Up. I will be purchasing one as soon as my Maverick gets here.Sure. I'll try to explain the system. I'll try to type this out to make it make sense.
The crankshaft is spinning in the engine splashing oil around, same goes for the camshafts. The combustion process causes a lot of cylinder pressure, some of that sneaks past the rings and into the block. The cylinder heads have holes that drain the oil back to the oil pan, those same holes allow that combustion gas that ends up in the crank case to make it into the cylinder head area. So you end up with all these spent combustion gasses and oil inside your engine. The valve cover has a vent on it that, in this case, goes directly to the air intake tube. That tube is always under vacuum sucking those vapors and oil out of the valve cover and into the intake. Those gases and oil is then sucked into the turbo, compressed and travels through the intercooler pipes, intercooler and then back into the intake manifold, cylinder head/valves re-burnt and the processes goes on and on.
Over time, and in many cases not a lot of time, that oil/vapor builds up on the valves/pistons and combustion chamber. It also lowers octane values and the worst part is the oil coats the inside of the intercooler and keeps building up inside of it. We have dumped a solid 1/2 quart of oil out of intercoolers in the past.
The oil separator is put into this system and catches that oil and separates it by a filtering media that is in the can. You occasionally drain it and it keeps the largest majority of the oil in the can, that is the closed system you see here.
A vented can has a filter on the top of it and is not recirculated (I should say should not be). The valve cover vent goes to the can, the crankcase vents directly to the can and catches 100% of the oil and vapors and the intake tract where it use to re-circulate to is eliminated.
The system on the Maverick is good for performance but horrible for contaminating the intake tract. The performance side is good because it directly vents the crankcase pressure but it does so with no way to filter out the contaminates. So what you gain in a drop in crankcase pressure will soon be cancelled by an intercooler full of oil. Even a thin film of oil inside an intercooler drastically drops its efficiency.
Hope this helps.
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