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Caterpillar does not warrant the quality or performance of non-Caterpillar fluids. |
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Do NOT mix brands or types of SCA. Do NOT mix SCAs and extenders. Failure to follow the recommendations can result in shortened cooling system component life. |
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Use Only Approved SCAs. Conventional coolants require the maintenance addition of SCA throughout their expected life. Do NOT use an SCA with a coolant unless specifically approved by the coolant supplier for use with their coolant. It is the responsibility of the coolant manufacturer to ensure compatibility and acceptable performance. Failure to follow the recommendations can result in shortened cooling system component life. |
Note: Cat SCA is compatible with Cat DEAC. If you use non Cat-brand conventional coolants, consult with the coolant manufacturer for information on a compatible SCA.
Note: Do not top-off the cooling system with water unless there is a specific need to adjust the water/glycol ratio. Compatible 50/50 (water/glycol) coolant is typically used and recommended when cooling system top-off is required.
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Never operate an engine without water temperature regulators in the cooling system. Water temperature regulators help to maintain the engine coolant at the proper operating temperature. Cooling system problems can develop without water temperature regulators. |
Note: Refer to the specific engine Operation and Maintenance Manual, "Maintenance Interval Schedule" for the service interval for the cooling system water temperature regulator.
Check the coolant/antifreeze (glycol concentration) in order to ensure adequate protection against boiling or freezing. Caterpillar recommends the use of a refractometer for checking the glycol concentration. Use the 245-5829 Coolant/Battery Tester/Refractometer. The tester gives readings in both degrees Celsius and degrees Fahrenheit that are immediate and accurate. The tester can be used with ethylene or with propylene glycol.
Cat engine cooling systems should be tested at
Additions of SCA are based on the results of the test or based on the results of the coolant analysis. An SCA that is liquid or a maintenance element for an SCA (if equipped) may be needed at
Table 1 lists the amount of Cat SCA that is needed at the initial fill in order to treat coolant/antifreeze. These amounts of Cat SCA are for systems that use heavy-duty coolant/antifreeze.
Table 1 also lists additions of supplemental coolant additive for liquid and for maintenance elements at
Note: Acceptable conventional heavy-duty coolant/antifreeze of all types REQUIRE periodic additions of SCA.
| Caterpillar SCA Requirements for Heavy-Duty Coolant/Antifreeze | ||||
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| Cooling System Capacity | Initial Fill(1) | |
Spin-on Element at |
Quantity of Elements |
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111-2370 | 1 |
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111-2369 | 1 |
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111-2369 | 1 |
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9N-3368 | 1 |
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111-2371 | 1 |
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9N-3718 | 1 |
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111-2371 | 2 |
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9N-3718 | 2 |
| (1) | When the coolant system is first filled, the SCA is not required to be used with Cat DEAC or with fully formulated coolants that meet the "ASTM D6210" specification. |
| (2) | Do not exceed the six percent maximum concentration. Check the concentration of SCA with a SCA test kit, or check the concentration of SCA with Cat S·O·S coolant analysis. |
| (3) | Do not use the maintenance element for the SCA and the liquid for the SCA at the same time. |
Note: Specific engine applications may require maintenance practices to be periodically evaluated in order to properly maintain the engine's cooling system.
Refer to Table 1 and Table 2 for part numbers and for quantities of SCA maintenance elements and/or liquid SCA.
| Cat Liquid SCA(1) | |
|---|---|
| Part Number | Size of Container |
| 6V-3542 | |
| 8T-1589 | |
| 3P-2044 | |
| 217-0616 | |
| 8C-3680 | |
| 217-0617 | |
| 5P-2907 | |
| 217-0618 | |
| (1) | The availability of part numbers will vary from one region to another region. |
Cooling Systems with Larger Capacities
Adding the SCA to Conventional Coolant/Antifreeze at the Initial Fill
Note: When the coolant system is first filled, the SCA is not required to be used with Cat DEAC or with fully formulated coolants that meet the "ASTM D6210" specification.
Note: Do not exceed the six percent maximum concentration. Check the concentration of SCA with a SCA test kit, or check the concentration of SCA with Cat S·O·S coolant analysis.
Commercial heavy-duty coolant/antifreeze that meets only the "ASTM D4985" specification WILL require adding supplemental coolant additive at the initial fill. Read the label or the instructions that are provided by the manufacturer of the commercial heavy-duty coolant/antifreeze.
Use the equation that is in Table 3 as a guideline in order to aid in determining the amount of SCA that is required when the cooling system is initially filled with fluids that only meet the "ASTM D4985" specification.
Note: When adding SCA at initial fill to a coolant/antifreeze that only meets the "ASTM D4985", ensure the SCA is compatible with the antifreeze/coolant. For example, a HOAT coolant that meets the "ASTM D4985" specification may not be compatible with an SCA designed for use with conventional coolants. It is the responsibility of the coolant manufacturer to provide sources of compatible SCAs. It is the responsibility of the coolant manufacturer and SCA manufacturer to demonstrate a positive influence on reducing cavitation corrosion in an operating diesel engine
Note: When adding SCA at initial fill to a coolant/antifreeze that only meets the "ASTM D4985", it is a collective responsibility of the user, coolant manufacturer, and SCA manufacturer to ensure the SCA is compatible with the antifreeze/coolant based on the recommendations provided by the coolant manufacturer and SCA manufacturer. One of the test methods required to be used to help ensure SCA compatibility with the antifreeze/coolant concentrate is "ASTM D5828-97". 6% SCA in the solution that is 60 parts antifreeze/coolant of interest, 34 parts water, and 6 parts SCA must have no more than 0.1 mL of formed insolubles. 12% SCA in a solution that is 60 parts antifreeze/coolant of interest, 28 parts water, and 12 parts SCA must have no more than 2 mL of formed insolubles. The SCA manufacturer is responsible for ensuring their SCA is compatible with water meeting the “Caterpillar Minimum Acceptable Water Quality Requirements” as found in this "Special Publication, and as found in "ASTM D6210-06", Table X1.1.
| Equation for Adding the Cat SCA to Conventional Coolant/Antifreeze at the Initial Fill |
| V × 0.045 = X |
| V is the total volume of the cooling system. |
| X is the amount of Cat SCA that is required. |
Table 4 is an example for using the equation that is in Table 3.
| Example of the Equation for Adding the Cat SCA to Conventional Coolant/Antifreeze at the Initial Fill | ||
| Total Volume of the Cooling System (V) | Multiplication
Factor |
Amount of Cat SCA that is Required (X) |
| |
× 0.045 | |
Adding the SCA to Conventional Coolant/Antifreeze for Maintenance
Conventional heavy-duty coolant/antifreeze of all types REQUIRE periodic additions of a supplemental coolant additive.
Test the coolant/antifreeze periodically for the concentration of SCA. For the interval, see the Operation and Maintenance Manual, "Maintenance Interval Schedule" for your engine. SCA test kits are available from your Caterpillar dealer. Test the concentration of SCA or submit a coolant sample to your Caterpillar dealer. See this Special Publication, "S·O·S Services Coolant Analysis" article.
Additions of SCA are based on the results of the test or based on the results of the coolant analysis. The size of the cooling system determines the amount of SCA that is needed.
Use the equation that is in Table 5 as a guideline in order to aid in determining the amount of SCA that is required, if necessary.
| Equation For Adding The Cat SCA To Conventional Coolant/Antifreeze For Maintenance |
| V × 0.014 = X |
| V is the total volume of the cooling system. |
| X is the amount of Cat SCA that is required. |
Table 6 is an example for using the equation that is in Table 5.
Note: Specific engine applications may require maintenance practices to be periodically evaluated in order to properly maintain the engine's cooling system.
| Example Of The Equation For Adding The Cat SCA To Conventional Coolant/Antifreeze For Maintenance | ||
| Total Volume of the Cooling System (V) | Multiplication
Factor |
Amount of Cat SCA that is Required (X) |
| |
× 0.014 | |
Table 2 lists part numbers and the sizes of containers for Cat SCA that is available from your Caterpillar dealer.
Cleaning the System of Heavy-Duty Coolant/Antifreeze
Before Cat SCA can be effective, the cooling system must be free from rust, scale, and other deposits. Preventive cleaning helps avoid downtime caused by expensive out-of-service cleaning required for extremely dirty and neglected cooling systems.
Cat Cooling System Cleaners:
- Dissolves or depresses mineral scale, corrosion products, light oil contamination, and sludge.
- Cleans the cooling system after used coolant is drained or before the cooling system is filled with new coolant.
- Cleans the cooling system whenever the coolant is contaminated or whenever the coolant is foaming.
- The “Standard” version of the Cat Cooling System Cleaner cleans the cooling system while still in service
- Reduces downtime and cleaning costs.
- Avoid costly repairs from pitting and other internal problems caused by improper cooling system maintenance.
- Can be used with glycol-based antifreeze.
- For the recommended service interval, refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for your engine.
Cat Standard Cooling System Cleaner is designed to clean the cooling system of harmful scale and corrosion without removing the engine from service. The cleaners, both “Standard” and “Quick Flush” can be used in all Cat engine cooling systems. Consult your Caterpillar dealer for part numbers.
Note: These cleaners must not be used in systems that have been neglected or that have heavy scale buildup. These systems require a stronger commercial solvent that is available from local distributors.
Follow label directions for proper usage.
Cat DEAC can be recycled. The drained coolant mixture can be distilled in order to remove the ethylene glycol and water. The ethylene glycol and the water can be reused. The distilled material does not contain the additives that are required to be classified as either Cat ELC or Cat DEAC. Consult your Caterpillar dealer for more information.
When recycled coolants are used, use only coolants that have been recycled from extended life, heavy-duty or automotive coolants that were originally manufactured from virgin ethylene or propylene glycol.
Recycled coolants should meet "ASTM D6210-06".