I plan on running 30 -50% wmo in my 1992 300d 2.5. I havnt had an issue with it yet in any of my diesels except the 6.5td chevy. Thanks to the optical sensor. My w123 ran great on it.

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Paul
6.2 diesel orphanage - "cherish the diesel vans"
1984 G20 6.2 diesel 140k
1992 G30 6.2 diesel 229k
1995 G30 6.5na diesel 140k
1988 E350 7.3na diesel 435k
1994 k3500 6.2na convert ????
1992 300d 2.5 turbo 360k
1998 R3500 5.9 12v 185k
2003 F650 5.9 24v 190k
Countless gassers