There is a modification that can be done to the valve cover to reduce the amount of oil that is blown into the air cleaner. Remove the valve cover. Look inside it where the front edge of the oil separator plate meets the aluminum casting of the valve cover just below the connection for the breather tube. If there is a gap there, the modification hasn't been done. If there is a band of gray epoxy, its been done already. I've used NAPA(Lock-tite)5-minute epoxy for this repair for 15 years with no failures.The epoxy comes in small single-use flat circular containers. Fill the gap with 5-minute epoxy(do not use any other sealant).
If the oil is hitting the ground, you do need to check the oil return tube from the air cleaner for leaks(as previously mentioned).
Randy D.

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W.R.Durrance
ASE Master Tech
Mercedes Tech 20 Years
68 250SE
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