Lubricating Oil Recommendations/Specifications
Oil Performance Recommendations
The use of quality engine lubricating oils combined with appropriate oil drain and filter change intervals are
critical factors in maintaining engine performance and durability.
Cummins Engine Company, Inc. recommends the use of a high quality SAE 15W-40 heavy duty engine oil
(such as Cummins Premium Blue) which meets the American Petroleum Institute (API) performance
NOTE: CC/CD or CD/SF engine oils can be used in areas where CE oil is not yet available, but the oil change
interval must be reduced to one half the interval given in the maintenance schedule.
A sulfated ash limit of 1.0 mass percent is suggested for optimum valve and piston deposit and oil consumption
control. The sulfated ash must not exceed 1.85 mass percent.
Oil Viscosity Recommendations
The use of multi-viscosity lubricating oil has been found to improve oil consumption control and improve engine
cranking in cold temperatures while maintaining lubrication at high operating temperatures.
While 15W-40 oil is recommended for most climates, refer to the accompanying table for oil viscosity recom-
mendations for extreme climates.