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ASTM D3306-05

(Specification)

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

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

SCOPE
1.1 This specification covers the requirements for ethylene glycol or propylene glycol base engine coolants used in automobiles or other light duty service cooling systems. When concentrates are used at 40 to 70 % 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 freezing, boiling, and corrosion.
1.2 The coolants governed by this specification are categorized as follows:
Coolant TypeDescriptionI Ethylene glycol base concentrateII Propylene glycol base concentrateIII Ethylene glycol predilute (50 vol %)IV Propylene glycol predilute (50 vol %)
Note 1--This specification is based on the knowledge of the performance of engine coolants prepared from new or virgin ingredients. Separate specifications exist for engine coolants prepared from recycled or reprocessed used coolant or reprocessed industrial-source glycols.
1.3 The values stated in SI units are to be regarded as the standard. The values 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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 2--This specification applies to automobiles and light duty service. Specifications D4985 and D6210 exist for heavy duty engine service.

General Information

Status
Historical
Publication Date
30-Sep-2005
ICS
71.100.45 - Refrigerants and antifreezes
Technical Committee
D15 - Engine Coolants and Related Fluids
Drafting Committee
D15.07 - Specifications
Current Stage
Ref Project

Relations

Replaces
ASTM D3306-03 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
Effective Date
01-Oct-2005
Replaced By
ASTM D3306-08 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
Effective Date
15-Jan-2008
Referred By
ASTM D1119-22 - Standard Test Method for Percent Ash Content of Engine Coolants
Effective Date
01-Oct-2005
Referred By
ASTM D6660-01(2023) - Standard Test Method for Freezing Point of Aqueous Ethylene Glycol Base Engine Coolants by Automatic Phase Transition Method
Effective Date
01-Oct-2005
Referred By
ASTM D4985-10(2023) - Standard Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)
Effective Date
01-Oct-2005
Referred By
ASTM D2847-22 - Standard Practice for Testing Engine Coolants in Car and Light Truck Service
Effective Date
01-Oct-2005
Referred By
ASTM D7715-12(2021) - Standard Specification for Fully-Formulated Glycerin Base Engine Coolant for Heavy-Duty Engines
Effective Date
01-Oct-2005
Referred By
ASTM D2570-16 - Standard Test Method for Simulated Service Corrosion Testing of Engine Coolants
Effective Date
01-Oct-2005
Referred By
ASTM D4725-15(2023) - Standard Terminology for Engine Coolants and Related Fluids
Effective Date
01-Oct-2005
Referred By
ASTM D6210-17 - Standard Specification for Fully-Formulated Glycol Base Engine Coolant for Heavy-Duty Engines<rangeref></rangeref >
Effective Date
01-Oct-2005

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ASTM D3306-05 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty ServiceASTM D3306-05 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
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ASTM D3306-05 - Standard Specification for Glycol Base Engine Coolant for Automobile and Light-Duty Service
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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 3306 – 05
Standard Specification for
Glycol Base Engine Coolant for Automobile and Light-Duty
1
Service
This standard is issued under the fixed designation D3306; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 General Requirements
1. Scope
Property Specified Values ASTM Test Method
1.1 This specification covers the requirements for ethylene
Color Distinctive . . .
glycol or propylene glycol base engine coolants used in
Effect on nonmetals No adverse effect under consideration
automobiles or other light duty service cooling systems.When
concentratesareusedat40to70%concentrationbyvolumein
water, or when prediluted glycol base engine coolants (50
D516 Test Methods for Sulfate Ion in Water
volume % minimum) are used without further dilution, they
D 1119 Test Method for Percent Ash Content of Engine
will function effectively to provide protection against freezing,
Coolants and Antirusts
boiling, and corrosion.
D1120 Test Method for Boiling Point of Engine Coolants
1.2 The coolants governed by this specification are catego-
D1121 Test Method for Reserve Alkalinity of Engine
rized as follows:
Coolants and Antirusts
Coolant Type Description
D1122 Test Method for Density and Relative Density of
Engine Coolant Concentrates and Engine Coolants by the
I Ethylene glycol base concentrate
II Propylene glycol base concentrate Hydrometer
III Ethylene glycol predilute (50 vol %)
D1123 Test Methods forWater in Engine Coolant Concen-
IV Propylene glycol predilute (50 vol %)
trate by the Karl Fischer Reagent Method
D1126 Test Method for Hardness in Water
NOTE 1—This specification is based on the knowledge of the perfor- D1177 Test Method for Freezing Point ofAqueous Engine
mance of engine coolants prepared from new or virgin ingredients.
Coolants
Separatespecificationsexistforenginecoolantspreparedfromrecycledor
D1287 Test Method for pH of Engine Coolants and Anti-
reprocessed used coolant or reprocessed industrial-source glycols.
rusts
1.3 The values stated in SI units are to be regarded as the
D1293 Test Methods for pH of Water
standard. The values in parentheses are for information only.
D1384 TestMethodforCorrosionTestforEngineCoolants
1.4 This standard does not purport to address all of the
in Glassware
safety concerns, if any, associated with its use. It is the
D1881 Test Method for Foaming Tendencies of Engine
responsibility of the user of this standard to establish appro-
Coolants in Glassware
priate safety and health practices and determine the applica-
D1882 TestMethodforEffectofCoolingSystemChemical
bility of regulatory limitations prior to use.
Solutions on Organic Finishes for Automotive Vehicles
D1888 Test Methods for Particulate and Dissolved Matter,
NOTE 2—This specification applies to automobiles and light duty
Solids, or Residue in Water
service. Specifications D4985 and D6210 exist for heavy duty engine
service. D2570 Test Method for Simulated Service Corrosion Test-
ing of Engine Coolants
2. Referenced Documents
D2809 Test Method for Cavitation Corrosion and Erosion-
2
2.1 ASTM Standards:
Corrosion Characteristics of Aluminum Pumps with En-
D512 Test Methods for Chloride Ion in Water gine Coolants
D3321 Test Method for Use of the Refractometer for Field
Test Determination of the Freezing Point of Aqueous
1
ThisspecificationisunderthejurisdictionofASTMCommitteeD15onEngine
Engine Coolants
CoolantsandisthedirectresponsibilityofSubcommitteeD15.07onSpecifications.
D3634 Test Method for Trace Chloride Ion in Engine
Current edition approved Oct. 1, 2005. Published November 2005. Originally
approved in 1974. Last previous edition approved in 2003 as D3306–03.
Coolants
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D4327 Test Method for Anions in Water by Chemically
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Supressed Ion Chromatography
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. D4340 Test Method for Corrosion of Cast Aluminum
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D3306–05
TABLE 2 Physical and Chemical Requirements
Property Type I Type II Type III Type IV ASTM Test Method
Relative density 1.110 to 1.145 1.030 to 1.065 1.065 min 1.025 min D 1122, D 5931
15.5/15.5°C (60/60°F)
Freezing point, °C (°F): D 1177, D 6660
50 vol % in DI water −37 (−34) max −32 (−26) max
Undiluted −37 (−34) max −32 (−26) max
A
Boiling point, °C (°F): D 1120
50 vol % in DI wate
...

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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).
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.  
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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.
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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).  
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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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