quote:
Originally posted by JHZR2:
Regarding the CDI mercedes-benz engines, I am not sure with the newer engines, however I am almost sure that MB would require a 40wt oil. So Id say the 5w-40. I dont think amsoil makes claims like redline that you can drop a viscosity grade...
I would probably say, get an oil that meets MB229.3 and/or 229.5 specs, and that would be your oil. FInal viscosity, provided they both meet the necessary spec, would be based upon your climate conditions and the load on the engine.
JMH