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ASTM D6471-03

(Specification)

Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service

Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service

SCOPE
1.1 This specification covers the requirements for a recycled prediluted aqueous ethylene glycol (50 volume % minimum) base engine coolant and recycled prediluted aqueous propylene glycol (50 volume % min) base engine coolant for use in automobiles and light-duty vehicles. This specification provides a procedure for evaluating engine coolant recycling technologies through the recycling of a reference synthetic used engine coolant. It also specifies the chemical, physical, and performance requirements for the recycled prediluted aqueous glycol base engine coolant that is produced from that procedure. When used without further dilution, this product functions effectively during both winter and summer. This material is intended to provide protection against freezing, boiling, and corrosion in automobile or other light-duty service cooling systems.
Note 1—Committee D15 has developed this specification using experience, knowledge, and research from recycling used aqueous base engine coolants and has not substantially studied the effects of recycling glycols from other sources or with excessive contaminant levels. Efforts are being made to produce a specification for redistilled glycol that addresses recycling used aqueous glycol base engine coolants and glycols from other sources.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are approximate equivalents and provided for information only.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Oct-2003
ICS
71.100.45 - Refrigerants and antifreezes
Technical Committee
D15 - Engine Coolants and Related Fluids
Drafting Committee
D15.15 - Recycled Engine Coolant
Current Stage
Ref Project

Relations

Replaces
ASTM D6471-99 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
Effective Date
01-Nov-2003
Replaced By
ASTM D6471-05 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
Effective Date
01-Jul-2005
Referred By
ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
Effective Date
01-Nov-2003
Referred By
ASTM D5752-10(2017) - Standard Specification for Supplemental Coolant Additives (SCAs) for Use in Precharging Coolants for Heavy-Duty Engines
Effective Date
01-Nov-2003
Referred By
ASTM D4725-15(2023) - Standard Terminology for Engine Coolants and Related Fluids
Effective Date
01-Nov-2003

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ASTM D6471-03 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty ServiceASTM D6471-03 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
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ASTM D6471-03 - Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 6471 – 03
Standard Specification for
Recycled Prediluted Aqueous Glycol Base Engine Coolant
(50 Volume % Minimum) for Automobile and Light-Duty
1
Service
This standard is issued under the fixed designation D 6471; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 Thisspecificationcoverstherequirementsforarecycled 2.1 ASTM Standards:
prediluted aqueous ethylene glycol (50 volume % minimum) D 512 Test Methods for Chloride Ion in Water
baseenginecoolantandrecycledpredilutedaqueouspropylene D 516 Test Method for Sulfate Ion in Water
glycol (50 volume % min) base engine coolant for use in D 1119 Test Method for Ash Content of Engine Coolants
automobiles and light-duty vehicles. This specification pro- and Antirusts
vides a procedure for evaluating engine coolant recycling D 1120 Test Method for Boiling Point of Engine Coolants
technologies through the recycling of a reference synthetic D 1121 Test Method for Reserve Alkalinity of Engine
used engine coolant. It also specifies the chemical, physical, Coolants and Antirusts
and performance requirements for the recycled prediluted D 1122 Test Method for Density or Relative Density of
aqueous glycol base engine coolant that is produced from that Engine Coolant Concentrates and Engine Coolants by the
procedure. When used without further dilution, this product Hydrometer
functions effectively during both winter and summer. This D 1126 Test Method for Hardness in Water
material is intended to provide protection against freezing, D 1176 Test Method for Sampling and Preparing Aqueous
boiling, and corrosion in automobile or other light-duty service Solutions of Engine Coolants or Antirusts for Testing
cooling systems. Purposes
D 1177 Test Method for Freezing Point of Aqueous Engine
NOTE 1—Committee D15 has developed this specification using expe-
Coolants
rience, knowledge, and research from recycling used aqueous base engine
D 1193 Specification for Reagent Water
coolants and has not substantially studied the effects of recycling glycols
from other sources or with excessive contaminant levels. Efforts are being D 1287 Test Method for pH of Engine Coolants and Anti-
made to produce a specification for redistilled glycol that addresses
rusts
recyclingusedaqueousglycolbaseenginecoolantsandglycolsfromother
D 1293 Test Methods for pH of Water
sources.
D 1384 TestMethodforCorrosionTestforEngineCoolants
1.2 The values stated in SI units are to be regarded as the
in Glassware
standard. The values given in parentheses are approximate D 1881 Test Method for Foaming Tendencies of Engine
equivalents and provided for information only.
Coolants in Glassware
1.3 This standard does not purport to address all of the D 1882 TestMethodforEffectofCoolingSystemChemical
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- D 1888 Test Methods for Particulate and Dissolved Matter,
3
priate safety and health practices and determine the applica-
Solids, or Residue in Water
bility of regulatory limitations prior to use.
1 2
ThisspecificationisunderthejurisdictionofASTMCommitteeD15onEngine For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Coolants and is the direct responsibility of Subcommittee D15.15 on Recycled contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Engine Coolant. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 1, 2003. Published January 2004. Originally the ASTM website.
3
approved in 1999. Last previous edition approved in 1999 as D 6471–99. Discontinued. See 1991 Annual Book of ASTM Standards, Vol 11.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6471–03
7
D 2570 Test Method for Simulated Service Corrosion Test- such specifications are available. Other grades may be used,
ing of Engine Coolants provided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
D 2809 Test Method for Cavitation Corrosion Erosion-
Corrosion Characteristics of Aluminum Pumps with En- the determination.
3.2 Purity of Water—Unless otherwise indicated, references
gine Coolants
to water shall be understood to mean reagent water as defined
D 2847 Practice for Testing Engine Coolants in Car and
by Type IV of Specification D 1193.
Lig
...

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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).
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FIG. 1 Metal Specimens and Equipment for the 336 h Corrosion Test
FIG. 2 Tall Form Beaker Specimens and Equipment for the 336 h Corrosion Test
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This specification establishes the testing and requirements of four types of engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols. Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants, and can either be redistilled or virgin. The commercial products shall be suitably sampled and tested, and shall conform accordingly to specified values of the following physical and chemical properties: clarity; color (Pt/Co scale); relative density; pH by volume in distilled water; acidity as acetic acid; composition by mass of individual glycols (including ethylene glycol, propylene glycol, dipropylene glycol, and others); total composition by mass of all glycols; water content; glycol ester content; and the maximum content for nitrites, nitrates, phosphates, silicon, chloride, sulfate, boron, aluminum, calcium, copper, iron, magnesium, lead, zinc, and iron.
SCOPE
1.1 This specification covers commercial products, engine coolant grade ethylene glycol and propylene glycol, including virgin glycols and those derived from the recycling of vehicle engine coolants and industrial source glycols.  
1.2 Types EG-1 and PG-1 cover glycols with sufficiently low limits on components to allow a blended coolant to meet most OEM (Original Equipment Manufacturer) specifications. These types will probably be virgin materials, although redistillation could produce a sufficiently pure product. Types EG-2 and PG-2 cover glycol that will be suitable for many coolants. These types can be either redistilled or virgin.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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.

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ASTM D1177-22(Test Method)
Standard Test Method for Freezing Point of Aqueous Engine Coolants

SIGNIFICANCE AND USE
5.1 The freezing point of an engine coolant indicates the coolant freeze protection.  
5.2 The freezing point of an engine coolant may be used to determine the approximate glycol or glycerin content, provided the glycol type is known.
SCOPE
1.1 This test method covers the determination of the freezing point of an aqueous engine coolant solution in the laboratory.  
Note 1: Where solutions of specific concentrations are to be tested, they shall be prepared from representative samples as directed in Practice D1176. Secondary phases separating on dilution need not be separated.
Note 2: These products may also be marketed in a ready-to-use form (prediluted).  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.3 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.  
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