CYLINDER AS 5108437 - Caterpillar

Caterpillar recommends a 1:1 mixture of water and glycol. This mixture will provide optimum heavy-duty performance as a coolant/antifreeze.Note: Caterpillar DEAC DOES NOT require a treatment with an SCA at the initial fill. Commercial heavy-duty coolant or 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. Refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that pertains to coolants.Note: Table 4 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". To achieve this service life, the coolants must be properly maintained. The maintenance program includes S O S coolant analysis.
Table 4
Coolant Service Life
Coolant Type Service Life (1)
Caterpillar ELC Six Years
Caterpillar 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.Engines with Separate Circuit Aftercooling
3512B Engine
Table 5
Approximate Refill Capacities for the 3512B Engine Cooling System with Separate Circuit Aftercooling
Compartment or System Liters US Gallons
Jacket water system 134.2 L 35.4 US gal
Separate circuit aftercooler 22.8 L 6 US gal
External system
Total cooling system 3516B Engine
Table 6
Approximate Refill Capacities for the 3516B Engine Cooling System with Separate Circuit Aftercooling
Compartment or System Liters US Gallons
Jacket water system 205.4 L 54.2 US gal
Separate circuit aftercooler 28 L 7.4 US gal
External system
Total cooling system Engines with Jacket Water Aftercooling
3512B Engine
Table 7
Approximate Refill Capacities for the 3512B Engine Cooling System with Jacket Water Aftercooling
Compartment or System Liters US Gallons
Engine only 160 L 42.3 US gal
External system
Total cooling system 3516B Engine
Table 8
Approximate Refill Capacities for the 3516B Engine Cooling System with Jacket Water Aftercooling
Compartment or System Liters US Gallons
Engine only 235 L 62 US gal
External system
Total cooling system