I was driving tonight and I smelled crankcase oil in the cabin. I could also smell it outside the car too. I took the air cleaner off yesterday and I noticed a broken vacuum line to a hose that goes from the air cleaner bottom to the bak of one of the valve covers. I also noticed some oil in that tube connected to the air cleaner. Why is oil in there and how do I keep it out? Also what does that vaccum line go to? thanks for any replies

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1989 560SEC
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