SEGMENT-SPROCKET 6I9526 - Caterpillar

Every attempt is made to provide accurate, up-to-date information. By use of this document you agree that Caterpillar Inc. is not responsible for errors or omissions.
Note: Many of the following recommendations and requirements are interrelated. Read all of the information which is provided. Refer to the latest edition of Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information. Contact your Caterpillar dealer in order to confirm that you have the latest recommendations for fluids.Lubrication System
A Caterpillar Engine which is covered by this Operation and Maintenance Manual may be equipped with a Caterpillar Engine Aftertreatment System. The engine with the engine aftertreatment system meets United States Environmental Protection Agency (US EPA) Tier 4 emissions requirements.Caterpillar requires that Caterpillar Engines which meet US EPA Tier 4 emissions requirements use one of the following engine oils:
Cat DEO-ULS (Diesel Engine Oil - Ultralow Sulfur)
Cat DEO-ULS SYN (Diesel Engine Oil - Ultralow Sulfur Synthetic)
Cat Cold Weather DEO-ULS
Commercial oil which meets the Caterpillar ECF-3 (Engine Crankcase Fluid - 3) specification or which meets the requirements of the American Petroleum Institute (API) CJ-4 oil categoryEngine Oil Viscosity
In selecting oil for any engine application, both of the following must be satisfied: the oil viscosity and the category of oil performance or the specification for oil performance. Using only one of these parameters will not sufficiently define oil for an engine application.The proper SAE viscosity grade oil is determined by the minimum ambient temperature during cold engine start-up, and the maximum ambient temperature during engine operation. Refer to Table 1 (minimum temperature) in order to select the oil viscosity for engine operation at the highest ambient temperature that is anticipated.Refer to Table 1 (maximum temperature) in order to select the oil viscosity for engine operation at the highest ambient temperature that is anticipated.Note: Generally, use the highest oil viscosity that is available to meet the requirement for the temperature at start-up.
Table 1
Lubricant Viscosities for Ambient Temperatures for DI Diesel Engines (1)    
    Ambient Temperature    
Viscosity Grade     Minimum     Maximum    
SAE 0W-30    
−40 °C (−40 °F)    
30 °C (86 °F)    
SAE 0W-40    
−40 °C (−40 °F)    
40 °C (104 °F)    
SAE 5W-30    
−30 °C (−22 °F)    
30 °C (86 °F)    
SAE 5W-40    
−30 °C (−22 °F)    
50 °C (122 °F)    
SAE 10W-30    
−18 °C (0 °F)   &nbs