PLUG-CUP 8H2768 - 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 coolants are the primary types of coolants that are used in Caterpillar Engines:Preferred - Cat ELC (Extended Life Coolant) or a commercial extended life coolant that meets the Caterpillar EC-1 specificationAcceptable - Cat DEAC (Diesel Engine Antifreeze/Coolant) or a commercial heavy-duty coolant/antifreeze that meets "ASTM D4985" or "ASTM D5345" 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/antifreeze that meets "ASTM D4985" or "ASTM D5345" 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. Caterpillar recommends a minimum of six percent to a maximum of eight 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, SEBU7003, "3600 and C280 Diesel Engine Fluids Recommendations" for additional information that relates coolant.Note: Table 3 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's Operation and Maintenance Manual, "Maintenance Interval Schedule" (Maintenance Section). To achieve this service life, the coolants must be properly maintained. The maintenance program includes S O S coolant analysis.
Table 3
Coolant Service Life
Coolant Type Service Life (1)
Cat ELC Six Years
Cat DEAC Three Years
Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D5345" Two Years
Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D4985" One Year
Caterpillar SCA and Water Two Years
Commercial SCA and Water One Year
(1) The service life of coolant is also limited by use (service hours). Refer to the specific engine's Operation and Maintenance Manual, "Maintenance Interval Schedule" (Maintenance Section).Coolant Capacities
To properly maintain the cooling system, the total cooling system capacity must be determined. The total cooling system capacity will vary between individual installations. The total cooling system capacity can include the following components: engine, expansion tank, heat exchanger, radiator, keel cooler and piping.Refer to the specifications that are provided by Caterpillar or the OEM of the installation. Record the total cooling system capacity in the appropriate Table.
Table 4
Approximate Refill Capacities for 3600 Series Engine Cooling Systems
Compartment or System 3606 Engine 3608 Engine 3612 Engine 3616 Engine
Engine 400 L (106 US gal) 530 L (140 US gal) 800 L (211 US gal) 1060 L (280 US gal)
Standard expansion tank 300