This is NOT necessarily a knock on the OM642 engine (no pun intended). It's a PSA on what happens if the wrong oil is used and/or if someone tries to be penny-wise and dollar-foolish when it comes to trying to do extended oil change intervals.

It's a long video; you may want to watch it at 1.25x or 1.5x speed. Go grab a can of whipped cream and enjoy...

https://www.youtube.com/watch?v=_j9vMzgnyfc

__________________
Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+

Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.