GLASS 3639623 - Caterpillar

Operating with fuels that do not meet Caterpillar's recommendations can cause the following effects: starting difficulty, poor combustion, deposits in the fuel injectors, reduced service life of the fuel system, deposits in the combustion chamber and reduced service life of the engine.
Note: Refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for the Caterpillar Specification for distillate fuel and for additional information that relates to fuel for your engine.Refill Capacities (Fuel System)
Refer to the Operation and Maintenance Manual that is provided by the OEM for capacities of the fuel system.Coolant
The following two coolants are used in Caterpillar diesel engines:Preferred - Cat ELC (Extended Life Coolant) or a commercial extended life coolant that meets the Caterpillar EC-1 specificationAcceptable - A Cat DEAC (Diesel Engine Antifreeze/Coolant) or a commercial heavy-duty antifreeze that meets "ASTM D4985" or "ASTM D5345" specifications
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 water and glycol. This mixture of water and glycol will provide optimum heavy-duty performance as an antifreeze.Note: Cat DEAC does not require a treatment with an SCA at the initial fill. Commercial heavy-duty 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 that do not require anti-boil protection or freeze protection, a mixture of SCA and water is acceptable. Caterpillar recommends a six percent to eight percent concentration of SCA in those cooling systems. Distilled water or deionized water is preferred. Water which has the recommended properties may be used.
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
Cat ELC 6000 Service Hours or Six Years
Cat DEAC 3000 Service Hours or Three Years
Commercial Heavy-Duty Antifreeze that meets "ASTM D5345" 3000 Service Hours or Two Years
Commercial Heavy-Duty Antifreeze that meets "ASTM D4985" 3000 Service Hours or One Year
Caterpillar SCA and Water 3000 Service Hours or Two Years
Commercial SCA and Water 3000 Service Hours or One Year 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 in order