STICK CYLINDER GP-SEAL & 0874898 - Caterpillar

Do not use a commercial coolant/antifreeze that only meets the ASTM "D3306" specification. This type of coolant/antifreeze is made for light duty automotive applications.Use only the coolant/antifreeze that is recommended.
Caterpillar recommends a 1:1 mixture of properly inhibited distilled or deionized 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. However, a commercial heavy-duty coolant/antifreeze that only meets the "ASTM D4985" specification WILL require a treatment with an SCA at the initial fill. A commercial heavy-duty coolant/antifreeze that meets the "ASTM D6210" specification WILL NOT require a treatment with an SCA at the initial fill. Read the label or the instructions that are provided by the manufacturer of the commercial heavy-duty coolant/antifreeze.Note: These coolants WILL require a treatment with a supplemental coolant additive on a maintenance basis.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 concentration of Cat SCA in those cooling systems. Distilled water or deionized water is preferred. If distilled or deionized water is not available, use water that meets or exceeds the minimum acceptable water requirements that are listed in this Special Publication, "General Coolant Information" article (Maintenance Section).
All Caterpillar diesel engines equipped with air-to-air aftercooling (ATAAC) require a minimum of 30 percent glycol to prevent water pump cavitation.
Table 1
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 (5) and water (6)     3000 Service Hours or Two Years    
Commercial supplemental coolant additive (7) and water (6)     3000 Service Hours or One Year    
( 1 ) Use the interval that occurs first.
( 2 ) Refer to the engine's Operation and Maintenance Manuals, "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 ) Refer to this Special Publication, "General Coolant Information" under the section that discusses the requirements for water.
( 7 ) Consult the supplier for the commercial SCA for instructions on usage. Also,