www.changlin.com.cn Engine Lubricating Oil Recommendations The use of quality engine lubricating oils combined with appropriate lubricating oil drain and filter change intervals is a critical factor in maintaining engine performance and durability. Cummins Engine Company, Inc.recommends the use of a high quality SAE 1 5W-40 heavy duty engine lubricating oil (such as Cummins Premium Blue) which meets the American Petroleum institute (API) performance classification CF4/SG. NOTE: CE/SG/SF engine lubricating oils can be used in areas where CF4 oil is not yet available, but the lubricating 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 lubricating oil consumption control. The sulfated ash must not exceed 1.85 mass percent. Lubricating Oil Viscosity Recommendations The use of multi-viscosity lubricating oil has been found to improve lubricating oil consumption control and improve engine cranking in cold temperatures while maintaining lubrication at high operating temperatures. While 1 5W-40 lubricating oil is recommended for most climates. refer to the accompanying table for lubricating oil viscosity recommendations for extreme climates.
For further details and discussion of engine lubricating oils for Cummins engines, refer to Bulletin No. 3810340, Cummins Engine Oil Recommendations. Caution: Limited use of low viscosity lubricating oils such as 10 W-30 may be used to aid in starting the engine and providing sufficient oil flow at ambient temperatures below -5 °C [23 °Fl. However, continuous use of low viscosity lubricating oils can decrease engine life due to wear. Refer to the accompanying chart. 140 / 149 pages