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In the New Systems, Refilled Systems, and converted systemsEvery year: add to it hours: ever year or every 2000 hours, whichever comes first.When referring to the Service Life in table 1, use the interval that occurs first. These coolant change intervals are only achievable with annual S O S Services Level 2 coolant sampling analysis.Refer to the engine Operation and Maintenance Manual for the correct interval for replacement of the cooling system water temperature regulator.Note: For engines that require a maximum of 20% glycol, make sure that the amount of additive in the final mix is appropriate. Example of mixing a 20% glycol solution is given in Table 3.
Table 3
Example of Mixing Up a 20% Glycol Coolant (1)
Total Volume of the Cooling System Add the Following:
ELC Concentrate ELI Concentrate Water
10 Gallons 2 Gallons 0.5 Gallons 7.5 Gallons
(1) Volumes can also be in liters as long as all the volume units are consistentExtended life coolants require the one time maintenance addition of an extender at coolant service mid-life. For commercial coolants, do NOT use an extender with a coolant unless the extender has been approved by the coolant manufacturer for use with the coolant. The coolant manufacturer is responsible to ensure compatibility and acceptable performance. Failure to follow these recommendations can result in shortened cooling system component life.Conventional coolants require the maintenance addition of SCA throughout the expected life. For commercial coolants, do NOT use an SCA unless approved by the coolant supplier for use with the coolant. The coolant manufacturer is responsible to ensure compatibility and acceptable performance."ASTM D6210" require coolants that are properly dosed with SCA and that are in a properly maintained cooling system in normal service to be suitable for use for a maximum of 2 years. The suitability for use requirement is the direct responsibility of the coolant manufacturer and SCA manufacturer. Consult with the coolant and/or SCA manufacturer concerning the suitability of the products for use in a given application.Cat DEAC is fully formulated and does not require a treatment with an SCA at the initial fill.A commercial heavy-duty coolant/antifreeze that meets the "ASTM D6210"specification does not require a treatment with an SCA at the initial fill.Commercial Heavy Duty coolants that meet only "ASTM D4985" specification are not recommended for Caterpillar applications. These coolants may not provide the performance characteristics needed for heavy duty applications. Cat coolants and the coolants detailed in Table 1 and in this Chapter are formulated to offer the required performance in Cat engines. Refer to Table 1 for Cat coolants recommendations.Cat ELC, Cat ELI, Cat DEAC, Cat Extender, and Cat SCA are available in several container sizes. The availability of part numbers will vary by the region. Consult your Cat dealer.In stationary and marine engine applications that do not require protection from boiling or freezing, except as noted in Table 2, Cat ELI in water or SCA and water are acceptable.