Cummins ISM 435

[Inliner]

Valvoline Premium Blue (15W40). Taken from the Cummins website:

"Recommended for all Cummins diesel engines, also suitable for other engines.

Premium Blue Engine Oil is the result of Valvoline teaming up with Cummins to develop the highest standards in diesel engine lubrication. Working together, sharing technology and product development at every level, Valvoline and Cummins have taken quality engine lubrication to a new level. Premium Blue is formulated to provide advanced performance in modern, low emission diesel engines including the latest emission certified engines as well as Euro1/Euro2, operating under a wide variety of service conditions. Premium Blue is endorsed and recommended by Cummins, and is an approved *CES20071 engine oil."

There is also a 5W40 synthetic version.

 

[PHCT]

Somebody knows what oil is recomended for a Cummins ISM 435?

 

[1040 WreckerMan]

Cummins will always recommend Valvoline as they have an affiliation. At work we run re-refined 15w40 in 800 M11/ISM engines and have good service. Any good diesel oil will work great in an M. 15w40 for most will work fine, or 5w40 in colder climates. The M's are a very robust design engine and are very easy on the oil. With regular maintenance an M11/ISM is a million mile engine.

 

[TheTanSedan]

Read posts by Doug Hilary on HD diesel for some perspective.
1040WreckerMan is dead on, IMO.