Quote:
Originally posted by RenoHuskerDu
I'm kinder cornfused ...  by this thread.
I couldn't use Mobil 1 in my Powerstroke Diesel because it didn't meet Navistar's anti-scuffing spec. This protects the piston rings and cylinder walls for such long-stroke engines. I had to use Delvac, Delo, or Amsoil.
Don't our Benz diesels require a similar anti-scuffing specification? If I remember right it's called CH-4.
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Synthetic Delvac 1, Mobil 1 for truck & SUV's (both the same oil, just different package), and I believe Mobil 1 15W-50 are all CH-4 or better.