FILTER 3I0567 - Caterpillar

Cooling System
Coolant Recommendations
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.
The following two types of coolants may be used in Cat Engines:Preferred - Cat ELC (Extended Life Coolant) or a commercial extended life coolant that meets the Cat EC-1 specificationAcceptable - Cat DEAC (Diesel Engine Antifreeze/Coolant) or a commercial heavy-duty coolant/antifreeze that meets "ASTM D4985" or "ASTM D6210" specificationsCaterpillar 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. Commercial heavy-duty coolant or heavy-duty antifreeze that meets "ASTM D4985" or "ASTM D6210" specifications may require a treatment with an SCA at the initial fill. Read the label or the instructions that are provided by the OEM of the product.In stationary engine applications and marine engine applications that do not require protection from boiling or freezing, a mixture of SCA and water is acceptable. Cat recommends a minimum of 6 percent to a maximum of 8 percent SCA concentration in those cooling systems. Distilled water or deionized water is preferred. Water which has the required properties may be used. For the water properties, refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that pertains to coolants.Note: Table2 is a list of the coolants that are recommended and the service life (calendar) of the coolants. The service life of coolant is also limited by use (service hours). Refer to the specific engine Operation and Maintenance Manual, "Maintenance Interval Schedule". To achieve this service life, the coolants must be maintained properly. The maintenance program includes S O S coolant analysis.
Table 2
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 and water(5) 3000 Service Hours or Two Years
Commercial supplemental coolant additive and water(6) . 3000 Service Hours or One Year
(1) Use the interval that occurs first.
(2) Refer to this Operation and Maintenance Manual, "Maintenance Interval Schedule" for the correct interval for replacement of the cooling system water temperature regulator.
(3) Cat ELC Extender must be added at 6000 service hours or one half of the service life of the Cat 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) Consult the supplier for the commercial SCA for instructions on usage. Note: These coolant change intervals are only achievable with annual S O S Services Level 2 coolant sampling and analysis.S O S Services