You can cut down on the "crud" by limiting the oil that typically passes out the crankcase vent into the intake (or turbo). Check this post for how we mounted a CCV filter on my '93 300D.
Is this a PCV or just an elbow OM603
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"If it ain't broke; I can fix it!
-'93 300D 2.5 *Turbo Diesel
- * (Will not cause whiplash!)
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