I took a look at that video, and all I can say is that the guy has little credibility. He is decidedly NOT good at public speaking. Er...uh....er... uh... and all of that hee-hawing around. He is certainly NOT any kind of engineer, and strikes me as not much of a mechanic either. He apparently thinks that he is smarter than 50 million dollar engineering departments at Ford and IH.
Lotsa luck.
Now, to answer the original question... All engines have some combustion gasses that escape into the crankcase. If the rings had a perfect seal, the engine would not last long due to lack of lubrication of the cylinder walls. As such, the escaping gases need to go someplace, hence the vent. Venting to atmosphere is pollution. EPA frowns on that. Earlier diesels used a CDV system to take care of crankcase emissions. This is the equivalent to the PCV valve on gasoline engines.
If a problem occurs from this being vented into the turbo intake, it would only be because oil droplets were not properly trapped from leaving the engine. In general, it should do no harm.
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Today's Featured Article - Piston Ring Removal and Replacement - by Chris Pratt. Piston Ring Removal and Replacement - Replacing rings is a fairly easy process to stretch the engines usability between major rebuilds and cut down on that blue smoke and high oil consumption. Frequently, replacing only the rings is not advisable because by the time you do the teardown and measurement of the components, the pistons are often beyond the manufacturers specification or something else you find will signify the need for a major rebu
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