ASTM D6472-00

Standard Specification for Recycled Glycol Base Engine Coolant Concentrate for Automobile and Light-Duty Service

SCOPE
1.1 This specification covers the requirements for recycled ethylene glycol base engine coolant concentrate and recycled propylene glycol base engine coolant concentrate 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 glycol base engine coolant concentrate that is produced from that procedure. When used at 40 to 70 volume % in water, it will function 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 D-15 has developed this specification using experience, knowledge, and research from the recycling of 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 redistilled glycol specification 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.
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: 09-Jan-2000
• ICS: 71.100.45 - Refrigerants and antifreezes
• Technical Committee: D15 - Engine Coolants and Related Fluids
• Drafting Committee: D15.15 - Recycled Engine Coolant

Relations

• Replaced By: ASTM D6472-03 - Standard Specification for Recycled Glycol Base Engine Coolant Concentrate for Automobile and Light-Duty Service
• Effective Date: 01-Nov-2003
• Referred By: ASTM D3306-21 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
• Effective Date: 10-Jan-2000
• Referred By: ASTM D4725-15(2023) - Standard Terminology for Engine Coolants and Related Fluids
• Effective Date: 10-Jan-2000
• Referred By: ASTM D5752-10(2017) - Standard Specification for Supplemental Coolant Additives (SCAs) for Use in Precharging Coolants for Heavy-Duty Engines
• Effective Date: 10-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 6472 – 00
Standard Specification for
Recycled Glycol Base Engine Coolant Concentrate for
Automobile and Light-Duty Service
This standard is issued under the fixed designation D 6472; 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 D 1119 Test Method for Ash Content of Engine Coolants
and Antitrusts
1.1 This specification covers the requirements for recycled
D 1120 Test Method for Boiling Point of Engine Coolants
ethylene glycol base engine coolant concentrate and recycled
D 1121 Test Method for Reserve Alkalinity of Engine
propylene glycol base engine coolant concentrate for use in
Coolants and Antitrusts
automobiles and light-duty vehicles. This specification pro-
D 1122 Test Method for Specific Gravity of Engine Coolant
vides a procedure for evaluating engine coolant recycling
Concentrates and Engine Coolants by the Hydrometer
technologies through the recycling of a reference synthetic
D 1123 Test Method for Water in Engine Coolant Concen-
used engine coolant. It also specifies the chemical, physical,
trate by the Karl Fischer Reagent Method
and performance requirements for the recycled glycol base
D 1126 Test Method for Hardness in Water
engine coolant concentrate that is produced from that proce-
D 1176 Test Method for Sampling and Preparing Aqueous
dure. When used at 40 to 70 volume % in water, it will function
Solutions of Engine Coolants of Antirusts for Testing
effectively during both winter and summer. This material is
Purposes
intended to provide protection against freezing, boiling, and
D 1177 Test Method for Freezing Point of Aqueous Engine
corrosion in automobile or other light-duty service cooling
Coolants
systems.
D 1193 Specification for Reagent Water
NOTE 1—Committee D-15 has developed this specification using ex-
D 1287 Test Method for pH of Engine Coolants and Anti-
perience, knowledge, and research from the recycling of used aqueous
rusts
base engine coolants and has not substantially studied the effects of
D 1293 Test Methods for pH of Water
recycling glycols from other sources or with excessive contaminant levels.
D 1384 Test Method for Corrosion Test for Engine Coolants
Efforts are being made to produce a redistilled glycol specification that
in Glassware
addresses recycling used aqueous glycol base engine coolants and glycols
from other sources.
D 1881 Test Method for Foaming Tendencies of Engine
Coolants in Glassware
1.2 The values stated in SI units are to be regarded as the
D 1882 Test Method for Effect of Cooling System Chemical
standard. The values given in parentheses are approximate
Solutions on Organic Finishes for Automotive Vehicles
equivalents and provided for information only.
D 1888 Test Methods for Particulate and Dissolved Matter,
1.3 This standard does not purport to address all of the
Solids, or Residue in Water
safety concerns, if any, associated with its use. It is the
D 2570 Test Method for Simulated Service Corrosion Test-
responsibility of the user of this standard to establish appro-
ing of Engine Coolants
priate safety and health practices and determine the applica-
D 2809 Test Method for Cavitation Corrosion Erosion-
bility of regulatory limitations prior to use.
Corrosion Characteristics of Aluminum Pumps with En-
2. Referenced Documents
gine Coolants
D 2847 Practice for Testing Engine Coolants in Car and
2.1 ASTM Standards:
Light Truck Service
D 512 Test Methods for Chloride Ion in Water
D 3306 Specification for Ethylene Glycol Base Engine
D 516 Test Methods for Sulfate Ion in Water
Coolant for Automobile and Light-Duty Service
D 3634 Test Method for Trace Chloride Ion in Engine
Coolants
This specification is under the jurisdiction of ASTM Committee D-15 on
Engine Coolants and is the direct responsibility of Subcommittee D15.15 on
Recycled Engine Coolants.
Current edition approved January 10, 2000. Published February 2000. Annual Book of ASTM Standards, Vol 15.05.
2 4
Annual Book of ASTM Standards, Vol 11.01. 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.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D6472–00
D 4327 Test Method for Anions in Water by Chemically/ 4. Procedure
Suppressed Ion Chromatography
4.1 In order to properly evaluate a coolant recycling tech-
D 4340 Test Method for Corrosion of Cast Aluminum
nology, a reference synthetic used coolant (Annex A1) is to be
Alloys in Engine Coolants Under Heat-Rejecting Condi-
used as the feed stock. The reference synthetic used coolant
tions
shall be prepared in accordance with Annex A1. An appropri-
D 4656 Specification for Prediluted Aqueous Ethylene Gly-
ately sized batch of reference synthetic used coolant is to be
col Base Engine Coolant (50 Volume % Minimum) for
prepared and used to purge the recycling process components
Automobile and Light-Duty Service
and yield enough consistent product to complete the testing
D 4725 Terminology for Engine Coolants
specified within this specification
D 5216 Specification for Propylene Glycol Base Engine
4.2 Prepare the coolant recycling equipment or technology
Coolant for Automobile and Light-Duty Service
in accordance with the manufacturer’s directions and recom-
D 5827 Test Method for Determination of Chloride in
mendations.
Engine Coolant by Ion Chromatography
4.3 Vigorously stir or mix the reference synthetic used
D 6129 Test Method for Silicon in Engine Coolant Concen-
coolant using appropriate vessels and mixing equipment im-
trates by Atomic Absorption Spectroscopy
mediately prior to and during the processing through the
D 6130 Test Method for Determination of Silicon and Other
coolant recycling process.
Elements in Engine Coolant by Inductively Coupled
4.4 Recycle the reference synthetic used coolant according
Plasma-Atomic Emission Spectroscopy
to the manufacturer’s directions and recommendations.
D 6208 Test Method for Galvanostatic Measurement of
4.5 Evaluate the recycled coolant according to the require-
Pitting Potential of Aluminum and Its Alloys
ments listed in this specification.
D 6257 Specification for Prediluted Aqueous Propylene
Glycol Base Engine Coolant (50 Volume % Minimum) for 5. General Requirements
Automobile and Light-Duty Service
5.1 The recycled glycol base engine coolant concentrate
D 6471 Specification for Recycled Prediluted Aqueous Gly-
shall consist essentially of ethylene glycol or propylene glycol.
col Base Engine Coolant (50 Volume % Minimum) for
It also shall contain suitable corrosion inhibitors, a foam
Automobile and Light-Duty Service
suppressor, and sufficient water to dissolve the additives.
2.2 Other Documents:
5.1.1 Recycled ethylene glycol base engine coolant concen-
SAE HS40 Maintenance for Automotive Engine Cooling
trates may be packaged and should be able to be poured at
System
temperatures as low as −18°C (0°F). Other glycols such as
propylene and diethylene glycol may be included up to a
GM 6043M —Automotive Engine Coolant Concentrate—
maximum of 15 % if the chemical and physical properties in
Ethylene Glycol Type
Table 1 are met.
GM 1825M —Automotive Engine Coolant Concentrate—
5.1.2 Recycled propylene glycol base engine coolant con-
Ethylene Glycol; §3.11 Storage Stability and Compatibil-
centrates may contain glycols other than propylene glycol up to
ity
1 % provided the chemical and physical properties of Table 1
are met.
3. Reagents and Materials
5.2 The recycled glycol base engine coolant concentrate
3.1 Purity of Reagents—Reagent grade chemicals shall be
shall conform to the chemical and physical properties in Table
used in all tests. Unless otherwise indicated, it is intended that
1. If the recycled glycol base engine coolant concentrate
all reagents conform to the specifications of the Committee on
Analytical Reagents of the American Chemical Society where
such specifications are available . Other grades may be used,
TABLE 1 Physical and Chemical Requirements
provided it is first ascertained that the reagent is of sufficiently
Ethylene Glycol Propylene
ASTM Test
Property Base Specific Glycol Base
high purity to permit its use without lessening the accuracy of
Method
Values Specific Values
the determination.
Relative density, 15.5°C 1.110 to 1.145 1.030 to 1.065 D 1122
3.2 Purity of Water—Unless otherwise indicated, references
(60/60°F)
to water shall be understood to mean reagent water as defined
Freezing point, 50 volume −37 (−34) max −32 (−26) max D 1177
by Type IV of Specification D 1193. % in distilled water, C ( ) or lower or lower
A
Boiling point , undiluted, °C 163 (325) min 152 (305) min D 1120
(°F) 50 volume % in
107.8 (226) min 104 (219) min D 1120
distilled water
Effect on automotive finish no effect no effect D 1882
SAE Handbook, available from Society of Automotive Engineers, 400 Com- Ash content, mass % 5 max 5 max D 1119
pH, 50 volume % in distilled 7.5 to 11.0 7.5 to 11.0 D 1287
monwealth Drive, Warrendale, PA 15096.
water
Applicable rewrite available in Annex A2.
Chloride, ppm 25 max 25 max D 3634, D 5827
Applicable rewrite available in Annex A3.
Sulfate, ppm 100 max 100 max D 516, D 4327
Reagent Chemicals, American Chemical Society Specifications, American
Water, mass % 5 max 5 max D 1123
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
B B
Reserve alkalinity, mL Report Report D 1121
listed by the American Chemical Society, see Analar Standards for Laboratory
A
Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Some precipitate may be observed at the end of the test. This should not be
and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville, cause for rejection.
B
MD. Agreed value between the supplier and the customer.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D6472–00
TABLE 3 Performance Requirements
contains chloride, or sulfate levels greater than the require-
ments specified in Table 1, fleet testing requirements described ASTM Test
Property Specific Values
Method
in Section 6 shall be met. If the chloride, or sulfate require-
Corrosion in glassware; weight loss, mg/ D 1384
ments, or both, in Table 1 are met, fleet testing is not required.
specimen
Copper 10 max
NOTE 2—The intention of conducting fleet testing is to verify that the
Solder 30 max
effects of residual contaminants left in the recycled glycol base engine
Brass 10 max
coolant are neutralized through real world application in a fleet test. Due
Steel 10 max
to the fact that there are not enough industry field test data available to
Cast iron 10 max
support setting hard specification limits, the fleet test requirements in
Cast aluminum 30 max
Section 6 specify a protocol and limits based on comparing the recycled Simulated service test; weight loss, mg/ D 2570
specimen
glycol base engine coolant to an industry standard reference engine
Copper 20 max
coolant that is known to adequately protect modern day cooling systems
Solder 60 max
from corrosion.
Brass 20 max
Steel 20 max
5.3 The recycled glycol base engine coolant concentrate
Cast iron 20 max
shall conform to the general requirements in Table 2.
Cast aluminum 60 max
5.4 The recycled glycol base engine coolant concentrate
Corrosion of cast aluminum alloys at heat- D 4340
rejecting surfaces; weight loss, mg/cm /
shall be in accordance with the performance requirements in
1.0 max
week
Table 3.
Foaming D 1881
5.5 When preparing solutions for actual service, use mu-
Volume, mL 150 max
Break time, s 5 max
nicipal (treated) water, or low mineral content well water. If
Cavitation-Erosion rating for pitting, D 2809
such water is not available, then use deionized (demineralized)
cavitation, or Erosion of the water pump,
8 min
or distilled water. This practice will minimize the formation of
rating
Aluminum galvanostatic pitting potential, −0.40 min D 6208
hard water scale and avoid the introduction of aggressive
V v SHE
contaminants, such as chlorides and sulfates, that can increase
Fleet Test see 6.8 and appropriate
the corrosion rate of aluminum and iron (see Appendix X1 for subsections
additional information).
5.6 The product, when installed in accordance with the
recommendations of the manufacturer of the vehicle or the
6.2.1.3 Similar mileage and cooling system conditions.
coolant recycling process, and those on the product label, shall
be suitable for use in a properly maintained cooling system (see 6.2.1.4 Same cooling system and power train configuration.
Appendix X1) in normal passenger car service for a minimum 6.2.1.5 Aluminum head(s), aluminum radiator, aluminum
of one year without adversely affecting fluid flow and heat
heater core, and aluminum water pump (housing).
transfer.
6.2.1.6 Cast iron block (optional).
NOTE 3—Vehicles equipped with cast iron heads may be tested in
6. Fleet Testing Requirements
addition to those specified above. A minimum of five control vehicles and
6.1 Engine Coolants—Reference engine coolant concen-
five test vehicles, equipped with aluminum heads, shall complete the test
trate (see Annex A2) and recycled engine coolant concentrate
and be included in the conclusive analysis report.
shall be used to conduct the fleet testing.
6.2.2 Vehicle Setup—All vehicles shall be set up in accor-
6.2 Vehicles—A minimum of fourteen vehicles is recom-
dance with Practice D 2847 unless otherwise specified within
mended to start the test: seven containing reference engine
this specification.
coolant concentrate (control vehicles) and seven containing
6.2.2.1 All vehicles shall be set up with a new aluminum
recycled engine coolant concentrate (test vehicles). A mini-
head(s), aluminum radiator, aluminum water pump, thermostat,
mum of five control vehicles and five test vehicles shall finish
hoses, belts and radiator/cooling system cap. Installation of
the test. Starting with fourteen vehicles allows for vehicles to
new heater cores is recommended. New aluminum heads and
drop out of the test for various reasons, that is, mechanical
radiators are required, as they will be sectioned for evaluation
failure, coolant contamination, etc.
at the end of the test.
6.2.1 Vehicle Selection—All vehicle cooling systems shoul
...