FILM-IDENTIFICATION 2813098 - Caterpillar

All Caterpillar diesel engines equipped with air-to-air aftercooling (ATAAC) require a minimum of 30 percent glycol to prevent water pump cavitation.
Table 4
Coolant Service Life
Coolant Type Service Life(1)(2)
Cat ELC 12000 Service Hours or Six Years
Commercial Coolant that meets the Caterpillar EC-1 Specification 6000 Service Hours or Six Years
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(3) and Water(4) 3000 Service Hours or Two Years
Commercial supplemental coolant additive(5) and Water(4) 3000 Service Hours or One Year
(1) Use the interval that occurs first.
(2) Refer to the specific engine Operation and Maintenance Manual, "Maintenance Interval Schedule" for the correct interval for replacement of the Cooling System Water Temperature Regulator.
(3) The Cat SCA concentration in a cooling system that uses Cat SCA and water should be 6 to 8 percent by volume.
(4) Refer to Special Publication, SEBU6251, "General Coolant Information" under the section that discusses Water for requirements.
(5) Consult the supplier for the commercial SCA for instructions on usage. Also, refer to the Special Publication, SEBU6251, "Water/Supplemental Coolant Additive" topic for additional information.Note: Refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that relates to coolant for your engine.S O S Coolant Analysis
Table 5
Recommended Interval
Type of Coolant Level 1 Level 2
DEAC Every 250 Hours Yearly(1)
ELC Not Required Yearly
(1) The Level 2 Coolant Analysis should be performed sooner if a problem is identified by a Level 1 Coolant Analysis.S O S Coolant Analysis (Level 1)A coolant analysis (Level 1) is a test of the properties of the coolant.The following properties of the coolant are tested:
Glycol concentration for freeze protection and boil protection
Ability to protect from erosion and corrosion
pH
Conductivity
Visual analysis
Odor analysisThe results are reported, and appropriate recommendations are made.Refer to the Maintenance Interval Schedule in this Operation and Maintenance Manual, "Cooling System Coolant Sample (Level 1) - Obtain" for a sampling location and the maintenance interval for collecting the coolant samples.S O S Coolant Analysis (Level 2)A coolant analysis (Level 2) is a comprehensive chemical evaluation of the coolant. This analysis is also a check of the overall condition of the inside of the cooling system.The S O S Coolant Analysis has the following features:
Full coolant analysis (Level 1)
Identification of the source of metal corrosion and of contaminants
Water hardness
Identification of buildup of the impurities that cause corrosion
Identification of buildup of the impurities that cause scalingThe results are reported, and appropriate recommendations are made.Refer to the Maintenance Interval Schedule in this Operation and Maintenance Manual, "Cooling System Coolant Sample (Level 2) - Obtain" for a sampling location and the maintenance interval for collecting the coolant samples.Testing the engine coolant is important to ensure that the engine is protected from internal cavitation and from corrosion. The analysis also tests the ability of the coolant to protect the engine from boiling and from freezing. The S O S Coolant Analysis can be done at your Caterpillar dealer. Caterpillar S O S Coolant Analysis