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Here’s one sales blurb on the benefits of better oil filtration.A while back there was someone talking about some sort of aftermarket oil filtration system, full flow, bypass flow filtration? I can't remember what it was called exactly but in a nut shell it's a externally fitted system that filters the oil 100% and probably does a much better job that the mediocre sized OEM filters most cars come with these days.
I remember many years ago I was using Pennzoil and it used to go dirty quiet quickly compared to others and a wise mechanic said the Pennzoil gets dirty faster because it's doing a better job of cleaning it from inside the crankcase.
Diesels do produce more soot, it also gets into the intake and gums up the intake system so they do benefit more from having crankcase breather filtration systems as well.
yeah, wasn’t sure what you meant which is why I put a conditional ‘if’ in my reply (edited to now be in bold)I'm talking about the enclosed catch can style to suit diesels.
Provent Catch Cans
PROTECT YOUR DIESEL ENGINE AGAINST OIL & SOOT CONTAMINATION Direction-Plus™ ProVent® oil separator kit protects yourmodern diesel engine by substantially reducing the amount of oil entering the engine from blow-by gas in the crankcase ventilation system. HOW IT WORKS Direction-Plus™ ProVent®...ppdperformance.nz
I'd never suggest venting to atmo.