Quote:
Originally Posted by Maxbumpo
In an OM617.9xx, the turbo-charger ensures that if there is play in the valve stems, air flows UP the stem, and oil does NOT flow down into the intake side. Both the intake manifold and the exhaust manifold are constantly pressurized, so forget about oil flowing down the valve stems........
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Really ? That is going to surprise a lot of guys with real world experience .....