Re: Where Does Oil Where Block Bolts on Come From?

wvanbusk
 

Some of our engines are not well ventilated causing blow by pressure to build up, seals to leak, dipsticks and caps lost, oil all over the engine, chassis, roads, etc. Crosley added crankcase breathers at some point, but that was only partly remedial. The problem of blow-by pollution and leaks was solved when manufactures were forced to improve the management of crankcase gasses.  https://en.wikipedia.org/wiki/Crankcase_ventilation_system
Wade

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