PANEL GP-HOOD 3799441 - Caterpillar

Water
Deionized water or distilled water is recommended for use in engine cooling systems. If distilled water or deionized water is not available, use water with the properties that are listed in Table 4.
Table 4
Caterpillar Minimum Acceptable Water Requirements    
Property    Maximum Limit    ASTM Test    
Chloride (Cl)    
40 mg/L (2.4 grains per US gal)     "D512", "D4327"    
Sulfate (SO4)    
100 mg/L (5.9 grains per US gal)     "D516"    
Total Hardness    
170 mg/L (10 grains per US gal)     "D1126"    
Total Solids    
340 mg/L (20 grains per US gal)     "D1888"    
Acidity     pH of 5.5 to 9.0     "D1293"    
Use of water that does not meet the recommendations for the cooling system will damage the cooling system.Do not use these types of water in the cooling system: sea water, softened water that has been conditioned with salt, hard water and tap water.Only use water that meets the recommendations for the cooling system.
If you are not sure about the properties of your water, consult one of the following sources for a water analysis:
Caterpillar dealer
Local water utility company
Agricultural agent
Independent laboratoryGlycol
Do not use Extended Life Coolant (ELC) with Cat Gas Engines.ELC was not formulated for use in Cat Gas Engines.Do not use heat transfer fluids in Cat Gas Engines.Use only the coolant/antifreeze that is recommended.
Preferred - Caterpillar Natural Gas Engine Coolant (NGEC)Alternatively, use Caterpillar Diesel Engine Antifreeze/Coolant (DEAC) or a commercial heavy-duty coolant/antifreeze that meets "ASTM D6210" or "ASTM D4985" specifications.
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.
Acceptable - In applications that do not require protection from boiling or from freezing, a mixture of Caterpillar SCA and water that meets the properties that are listed in Table 4 is acceptable.Note: The preferred coolant/antifreeze and the acceptable mixture of SCA and water require different concentrations of SCA. Refer to the Special Publication, SEBU6400, "Supplemental Coolant Additive (SCA)" topic.Table 5 is a list of the coolant/antifreeze that is recommended for Caterpillar Gas Engines. The service life of the coolant/antifreeze that is used in Caterpillar Gas Engines is also listed. To achieve this service life, maintain the coolant. The maintenance program includes S O S coolant analysis.
Table 5
Recommended Coolant/Antifreeze and Service Life of the Coolant/Antifreeze    
Coolant/Antifreeze     Service Life (1)    
Caterpillar NGEC     Three Years    
Caterpillar DEAC    
Commercial Heavy-Duty Coolant/Antifreeze that meets "ASTM D6210"     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 Operation and Maintenance Manual, "Maintenance Interval Schedule".Additives
Preferred - Caterpillar Supplemental Coolant Additive (SCA)Acceptable - A commercial SCA that provides 1200 mg/L (70 grains per US gal) or 1200