Due to significant variations in the quality and in the performance of commercially available oils, Caterpillar makes the following recommendations:
- Cat DEO (Diesel Engine Oil) (10W-30)
- Cat DEO (Diesel Engine Oil) (15W-40)
Note: Cat DEO multigrade exceeds the requirements of the ECF-1 specification. Cat DEO SAE 15W-40 exceeds the performance requirements for the following API categories: API CI-4, API CI-4 PLUS, API CH-4, API CG-4, API CF, API CG-4 and API CJ-4.
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Cat does not warrant the quality or performance of non-Cat fluids. |
Note: If Cat DEO multigrade is not used, use only commercial oils that meet the following categories and specifications:
- Only commercial oils that meet the requirements of Caterpillar's ECF-1 (Engine Crankcase Fluid specification - 1) are acceptable for use in Caterpillar commercial Diesel Engines. API CH-4, API CI-4, and API CI-4 PLUS oils that have not met the requirements of Caterpillar's ECF-1 specification may cause reduced engine life.
- API CG-4 multigrade oils are acceptable for all Caterpillar Off-Highway Enginesand Caterpillar commercial Diesel Engines. When API CG-4 oils are used, do not exceed the standard oil drain interval. Refer to the engine Operation and Maintenance Manual for the oil drain interval.
Note: Do not use API CF-4 oils in Caterpillar Diesel Engines.
The proper SAE viscosity grade of oil is determined by the minimum ambient temperature during cold engine start-up, and the maximum ambient temperature during engine operation. To determine the oil viscosity that is required for starting a cold soaked engine, refer to the minimum temperature in Table 1. To select the oil viscosity for operation at the highest anticipated ambient temperature, refer to the maximum temperature in the Table. Use the highest oil viscosity that is available in order to meet the required temperature during start-up.
| Engine Oil Viscosities for Ambient Temperatures | ||
| Ambient Temperature | ||
| Viscosity Grade | Minimum | Maximum |
| SAE 0W-20 | |
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| SAE 0W-30 | |
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| SAE 0W-40 | |
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| SAE 5W-30 | |
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| SAE 5W-40 | |
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| SAE 10W-30 | |
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| SAE 10W-40 | |
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| SAE 15W-40 | |
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Note: Decrease the interval between oil changes by 20 percent and/or increase the API service classification of the oil for engines that operate at high load factors of 80 percent or more for extended periods of time. Refer to Caterpillar Publication, PEDP7035, "S·O·S Fluid Analysis Interpretation Guide" in order to fully understand optimizing oil change intervals.
Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change" for more information about oil change intervals .
In North America, diesel fuel that is identified as No. 1-D or No. 2-D in "ASTM D975" generally meet the specifications. These fuels are distilled from crude oil. Diesel fuels from other sources could exhibit detrimental properties that are not defined or controlled by this specification.
Refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that relates to diesel fuel.
The following two types of coolants may be used in Caterpillar Diesel Engines:
Preferred - Caterpillar Extended Life Coolant (ELC) or a commercial extended life coolant that meets the Caterpillar EC-1 specification
Acceptable - Caterpillar Diesel Engine Antifreeze/Coolant (DEAC) or a commercial heavy-duty coolant/antifreeze that meets "ASTM D4985", or "ASTM D6210" specifications
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Do not use a commercial coolant/antifreeze that only meets the ASTM "D3306" or equivalent specification. This type of coolant/antifreeze is made for light duty automotive applications. Use only the coolant/antifreeze that is recommended. |
Caterpillar recommends a 1:1 mixture of water and glycol. This mixture will provide optimum heavy-duty performance as a coolant/antifreeze.
Note: Cat DEAC does not require a treatment with an SCA at the initial fill. However, a commercial heavy-duty coolant/antifreeze that only meets the "ASTM D4985" specification WILL require a treatment with an SCA at the initial fill. A commercial heavy-duty coolant/antifreeze that meets the "ASTM D6210" specification will not require a treatment with an SCA at the initial fill. Read the label or the instructions that are provided by the manufacturer of the commercial heavy-duty coolant/antifreeze.
Note: These coolants WILL require a treatment with a supplemental coolant additive on a maintenance basis.
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All Caterpillar diesel engines equipped with air-to-air aftercooling (ATAAC) require a minimum of 30 percent glycol to prevent water pump cavitation. |
| Coolant Service Life | |
| Coolant Type | Service Life (1)(2) |
| Cat ELC | 12000 Service Hours or Six Years(3) |
| Commercial coolant that meets the Caterpillar EC-1 Specification | 6000 Service Hours or Six Years(4) |
| Cat DEAC | 3000 Service Hours or Three Years |
| Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D6210" | 3000 Service Hours or Two Years |
| Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D4985" | 3000 Service Hours or One Year |
| Cat SCA(5) (6) | 3000 Service Hours or Two Years |
| Commercial supplemental coolant additive(7)(6) | 3000 Service Hours or One Year |
| (1) | Use the interval that occurs first. |
| (2) | Refer to the engine Operation and Maintenance Manuals, "Maintenance Interval Schedule" for the correct interval for replacement of the water temperature regulator for the cooling system. |
| (3) | Cat ELC Extender must be added at 6000 service hours or one half of the service life of the ELC. |
| (4) | An extender must be added at 3000 service hours or one half of the service life of the coolant. |
| (5) | The concentration of Cat SCA in a cooling system that uses Cat SCA and water should be from 6 to 8 percent by volume. |
| (6) | Refer to this Special Publication, "General Coolant Information" under the section that discusses the requirements for water. |
| (7) | Consult the supplier for the commercial SCA for instructions on usage. Also, refer to this Special Publication, "Water/Supplemental Coolant Additive" topic for additional information. |
Note: These coolant change intervals are only possible with annual S·O·S Services Level 2 coolant sampling and analysis.
Cat ELC can be recycled into conventional coolants.
Cat ELC, Cat DEAC, Cat Extender, and Cat SCA are available in several differently sized containers.
Refer to Special Publication, SEBU6251, "Cat Commercial Diesel Engine Fluids Recommendations" for additional information that relates to coolants.
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These recommendations are subject to change without notice. Contact your local Cat dealer for the most up-to-date recommendations. |
Lubricating grease is used in two components, the fan motors and generator. Both use polyurea-thickened per 1E4177 ( 454-0291).
Note: Always choose a grease that meets the recommendations or a grease that exceeds the recommendations that are specified by the equipment manufacturer for the application.
Note: Purge all of the old grease from the joint when the grease is changed from one type of grease to another type of grease. Purge all of the old grease from the joint when a different supplier of grease is used. Some greases are not chemically compatible. Consult your supplier in order to determine if the greases are compatible.
If you are in doubt about the compatibility of the old grease and the new grease, purge all of the old grease from the joint.
For more information about choosing the correct lubricating grease, refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations".