I replaced my valve stem seals after I noticed an increase in oil consumption, smoke from the exhaust, spark plugs with traces of oil, and a considerable amount of oil in the intake after removing the throttle body. After a few hundred miles, I rechecked my work: oil consumption was down where as now I don't even need to top up between oil changes (7000 miles ±), spark plugs are clean and dry, and there is no smoke coming from the exhaust. However, I removed the throttle body and found some oil seepage, maybe less than 5 ml. Is this normal after a valve stem seal replacement or should the intake be completely dry?

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1990 190E 3.0L