ASTM D4985-10(2023)
(Specification)Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)
Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)
ABSTRACT
This specification covers the requirements for low silicate ethylene glycol base engine coolants for cooling systems of heavy-duty engines. Such engines are typically used in off-highway machinery for agriculture, mining, earth-moving, and construction; Class 5 to 8 over the road trucks and buses; high output stationary engine installations; and locomotive and marine installations. Prediluted coolants shall be prepared using deionized Ethylene glycol base engine coolant concentrates or prediluted ethylene glycol base engine coolants shall be formulated with ethylene glycol. The coolants shall conform to the prescribed physical, chemical, and performance requirements, which include relative density, freezing point, boiling point, ash content, pH, reserve alkalinity, water content, chloride ion content, silicon content, corrosion in glassware, simulated service test, foaming, and cavitation. The color and effect of nonmetals of the coolant shall be evaluated. Prediluted coolant shall also meet the required content of sulfate and iron. Its CaCO3 content shall be tested to determine its hardness.
SCOPE
1.1 This specification covers the requirements for low silicate ethylene glycol base engine coolants for cooling systems of heavy-duty engines. When concentrates are used at 40 % to 60 % concentration by volume in water, or when prediluted glycol base engine coolants (50 volume % minimum) are used without further dilution, they will function effectively to provide protection against corrosion, freezing to at least −36.4 °C (−33.5 °F), and boiling to at least 108 °C (226 °F).
Note 1: This specification is based on the knowledge of the performance of engine coolants prepared from new or virgin ingredients. A separate specification exists (Specification D6210) for heavy-duty engine coolants which may be prepared from recycled or reprocessed used coolant or reprocessed industrial-source ethylene glycol.
1.2 Coolants meeting this specification require an initial charge of a supplemental coolant additive (SCA) and require regular maintenance doses of an SCA to continue the protection in certain operating heavy-duty engine cooling systems, particularly those of the wet cylinder liner-in-block design. The SCA additions are defined by and are the primary responsibility of the engine manufacturer or vehicle manufacturer. If they provide no instructions, follow the SCA supplier's recommended instructions.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4985 − 10 (Reapproved 2023)
Standard Specification for
Low Silicate Ethylene Glycol Base Engine Coolant for Heavy
Duty Engines Requiring a Pre-Charge of Supplemental
1
Coolant Additive (SCA)
This standard is issued under the fixed designation D4985; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This specification covers the requirements for low
ization established in the Decision on Principles for the
silicate ethylene glycol base engine coolants for cooling
Development of International Standards, Guides and Recom-
systems of heavy-duty engines. When concentrates are used at
mendations issued by the World Trade Organization Technical
40 % to 60 % concentration by volume in water, or when
Barriers to Trade (TBT) Committee.
prediluted glycol base engine coolants (50 volume % mini-
mum) are used without further dilution, they will function
2. Referenced Documents
effectively to provide protection against corrosion, freezing to
2
2.1 ASTM Standards:
at least −36.4 °C (−33.5 °F), and boiling to at least 108 °C
D512 Test Methods for Chloride Ion In Water
(226 °F).
D516 Test Method for Sulfate Ion in Water
NOTE 1—This specification is based on the knowledge of the perfor-
D1119 Test Method for Percent Ash Content of Engine
mance of engine coolants prepared from new or virgin ingredients. A
Coolants
separate specification exists (Specification D6210) for heavy-duty engine
D1120 Test Method for Boiling Point of Engine Coolants
coolants which may be prepared from recycled or reprocessed used
D1121 Test Method for Reserve Alkalinity of Engine Cool-
coolant or reprocessed industrial-source ethylene glycol.
ants and Antirusts
1.2 Coolants meeting this specification require an initial
D1122 Test Method for Relative Density of Engine Coolant
charge of a supplemental coolant additive (SCA) and require
Concentrates and Engine Coolants By The Hydrometer
regular maintenance doses of an SCA to continue the protec-
D1123 Test Methods for Water in Engine Coolant Concen-
tion in certain operating heavy-duty engine cooling systems,
trate by the Karl Fischer Reagent Method
particularly those of the wet cylinder liner-in-block design. The
D1126 Test Method for Hardness in Water
SCA additions are defined by and are the primary responsibility
D1177 Test Method for Freezing Point of Aqueous Engine
of the engine manufacturer or vehicle manufacturer. If they
Coolants
provide no instructions, follow the SCA supplier’s recom-
D1287 Test Method for pH of Engine Coolants and Antirusts
mended instructions.
D1293 Test Methods for pH of Water
1.3 The values stated in SI units are to be regarded as the
D1384 Test Method for Corrosion Test for Engine Coolants
standard. The values given in parentheses are for information
in Glassware
only.
D1881 Test Method for Foaming Tendencies of Engine
Coolants in Glassware
1.4 This standard does not purport to address all of the
D1882 Test Method for Effect of Cooling System Chemical
safety concerns, if any, associated with its use. It is the
Solutions on Organic Finishes for Automotive Vehicles
responsibility of the user of this standard to establish appro-
D2570 Test Method for Simulated Service Corrosion Testing
priate safety, health, and environmental practices and deter-
of Engine Coolants
mine the applicability of regulatory limitations prior to use.
D2809 Test Method for Cavitation Corrosion and Erosion-
Corrosion Characteristics of Aluminum Pumps With En-
gine Coolants
1
This specification is under the jurisdiction of ASTM Committee D15 on Engine
Coolants and Related Fluids and is the direct responsibility of Subcommittee
2
D15.07 on Specifications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2023. Published September 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1989. Last previous edition approved in 2015 as D4985 – 10 (2015). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D4985-10R23. the ASTM website.
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