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Use only Cat products or commercial products that have passed Cat EC-1 specification for pre-mixed or concentrated coolants.Use only Cat ELC Extender with Cat ELC.Do NOT use conventional SCA with Cat ELC. Mixing Cat ELC with conventional coolants and/or conventional SCA reduces the Cat ELC service life.Do NOT mix brands or types of coolant. Do NOT mix brands or types of SCA and/or brands or types of extenders. Different brands or types may use different additive packages to meet the cooling system requirements. Different brands or types may not be compatible.Failure to follow the recommendations can reduce cooling system component life unless appropriate corrective action is performed.
In order to maintain the correct balance between the antifreeze and the additives, maintain the recommended concentration of Cat ELC. Lowering the proportion of antifreeze lowers the proportion of additive. The coolant will not be able to protect the system from pitting, cavitation, erosion, and deposits.During daily maintenance, use the premixed Cat ELC as a cooling system top-off. Check the specific gravity of the coolant system with the 245-5829 Coolant/Battery Tester/Refractometer. This tester gives readings that are immediate and accurate in both degrees Celsius and degrees Fahrenheit. Use Cat ELC Concentrate to restore the proper glycol concentration in the coolant system. Add the concentrate before the engine is exposed to freezing temperatures.
Do not use a conventional coolant to top-off a cooling system that is filled with Cat ELC.Do not use conventional SCA. Only use Cat ELC Extender in cooling systems that are filled with Cat ELC.
Cat ELC Extender
Cat ELC Extender is added to the cooling system halfway through the Cat ELC service life. Treat the cooling system with Cat ELC Extender at 6000 hours or one half of the coolant service life. Refer to your machine Operation and Maintenance Manual for exceptions. Refer to the “Part Number of Coolant” table in this Special Publication, "Coolant Recommendations" article for available quantities and part numbers.Use the formula in Table 2 to determine the proper amount of Cat ELC Extender for your cooling system. Refer to Operation and Maintenance Manual, "Refill Capacities and Recommendations" in order to determine the capacity of the cooling system.
Table 1
Formula For Adding Cat ELC Extender To Cat ELC
V × 0.02 = X
V is the total capacity of the cooling system.
X is the amount of Cat ELC Extender that is required. Table 2 is an example for using the formula that is in Table 1. This example is based on the typical capacity of a D8R Track-Type Tractor.
Table 2
Example Of The Equation For Adding Cat ELC Extender To Cat ELC
Total Volume of the Cooling System (V) Multiplication
Factor Amount of Cat ELC Extender that is Required (X)
94.6 L (25.0 US gal) × 0.02 1.9 L (0.5 US gal)
When using Cat ELC, do not use conventional SCAs, or, if equipped, SCA maintenance elements. In order to avoid SCA contamination of an ELC system, remove the SCA element base and plug off or bypass the coolant lines.
Cat ELC Cooling System Cleaning
Note: If the cooling system is already using Cat ELC, cleaning agents are not required at the specified coolant change interval. Cleaning agents are only required if the system has been contaminated by the addition of some other type of coolant or by cooling system damage.Clean water is the only cleaning agent that is required when Cat ELC is drained from a properly maintained cooling system.After the cooling system is drained and after the cooling system is refilled, operate the engine while the cooling system filler cap is removed. Operate the engine until the coolant level reaches the normal operating temperature and until the coolant level stabilizes. As needed, add the coolant mixture in order to fill the system to the proper level.Recycling Cat ELC
Cat ELC can be recycled into conventional coolants. The drained coolant mixture can be distilled in order to remove the ethylene glycol and the water. The ethylene glycol and the water can be reused. The distilled material does not contain the additives that are classified as either Cat ELC or Cat DEAC. Consult your Cat dealer for more information. Recycled coolants should meet the most current revision level of "ASTM D6210".Changing to Cat ELC
To change from heavy-duty coolant/antifreeze to the Cat ELC, perform the following steps:
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" and to Special Publication, PECJ0003, "Cat Shop Supplies and Tools" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to applicable regulations and mandates.
Drain the coolant into a suitable container.
Dispose of the coolant according to local regulations.
If equipped, remove the empty SCA maintenance element and remove the element base. Plug the coolant lines or bypass the coolant lines.
Do not leave an empty SCA maintenance element on a system that is filled with Cat ELC.The element housing may corrode and leak causing an engine failure.Remove the SCA element base and plug off or by-pass the coolant lines.
Flush the system with clean water in order to remove any debris.
Use Cat Quick Flush Cooling System Cleaner for cooling systems in order to clean the system. Cat Quick Flush Cooling System Cleaner is available in various sizes. Part numbers are 4C-4609 ( 0.5 L (0.125 US gal)) through 4C-4613 ( 208.2 L (55 US gal)). Follow the instructions on the label using a 6-10% concentration of cleaner in water.
Drain the cleaner into a suitable container. Flush the cooling system with clean water. Note: Deposits that remain in the system may be loosened and removed by the Cat ELC.
In systems with heavy deposits, disconnect the hoses. Clean the deposits and debris from the hoses and the fittings. Install the hoses and tighten the hose fittings. Refer to Specifications, SENR3130, "Torque Specifications" for the proper torques. Pipe threads may also need