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Re: WTF is wrong now........
The positive crankcase ventilation system pulls oil fumes into the intake for combustion, rather than allowing them escape into the atmosphere. This was one of the first "pollution control" devices installed on cars; even my '68 Mustang had a PCV valve, as well as a separate rubber hose leading from the breather cap to the air filter housing. This is how oil gets into the intake.
If your car isn't using an inordinate amount of oil or billowing blue smoke out the tailpipes, a little oil in the intake probably isn't a problem.
dcb
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