ASTM D3306 - 11

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

    Active Standard ASTM D3306 | Developed by Subcommittee: D15.07

    Book of Standards Volume: 15.05


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    ASTM D3306

    1. 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 TypeDescription
    IEthylene glycol base concentrate
    IIPropylene glycol base concentrate
    VEthylene glycol base concentrate
    containing glycerin
    IIIEthylene glycol predilute (50 vol %)
    IVPropylene glycol predilute (50 vol %)
    VIEthylene glycol base predilute
    containing glycerin (50 vol %)

    Note 1—This specification is based on the knowledge of the performance of engine coolants prepared from new or virgin ingredients. This specification shall also apply to engine coolants prepared using glycol generated from recycled or reprocessed used coolant or reprocessed industrial-source glycol, provided that said glycol meets the requirements of Specification E1177. Separate specifications (D6471 and D6472) exist for engine coolants prepared from recycled or reprocessed used coolant or reprocessed industrial-source glycol that does not meet the requirements established in Specification E1177. This specification shall also apply to glycol based engine coolants prepared using fully refined glycerin provided that said glycerin meets the requirements for Specification D7640.

    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 glycol base engine coolant for automobiles and light duty service. Specifications D4985 and D6210 exist for heavy duty engine service.

    TABLE 1 General Requirements

    PropertySpecified
    Values
    ASTM
    Test Method
    ColorDistinctive. . .
    Effect on
    nonmetals
    No adverse
    effect
    Under
    consideration

    TABLE 2 Physical and Chemical Requirements for Concentrates

    PropertyType IType IIType VASTM Test Method
    Relative density
    15.5/15.5°C (60/60°F)
    1.110 to 1.1451.030 to 1.0651.110 to 1.160AD1122, D5931
    Freezing point,B, C °C (°F),
    50 vol % in DI water
    36.4 (33.5) max31.0 (23.8) max36.4 (33.5) maxD1177, D6660
    Boiling point,B,D °C (°F),
    50 vol % in DI water
    108 (226) min104 (219)\tmin108 (226) minD1120
    Ash content, mass %5 max5 max5 maxD1119
    pH, 50 vol % in DI water7.5 to 117.5 to 117.5 to 11D1287
    Chloride, μg/g25 max25 max25 maxD3634, D5827E
    Water, mass %5 max5 max5 maxD1123
    Reserve alkalinity, mLreportFreportFreportFD1121
    Effect on automotive finish
    (use clear coat thermoset
    urethane or acrylic urethane finish)
    no effectno effectno effectD1882G

    A Type V engine coolant is ethylene glycol base containing glycerin. Other ingredients that do not meet Specifications E1177 and D7640 shall not be substituted in this blend.

    B For purposes of determining conformance with this specification, an observed value shall be rounded to the nearest unit in the last right-hand digit used in expressing the specification limit, in accordance with the rounding method of Practice E29.

    C Test Methods D1177 and D6660 work with glycol/glycerin mixtures. Field test devices based on refractive index and density are under development.

    D Some precipitate may be observed at the end of the test. This should not be cause for rejection.

    E In case of dispute, D3634 shall be the preferred test method.

    F Value as agreed upon between the supplier and the customer.

    G Currently, many vehicle manufacturers prepare test panels using the specific paint finishes employed on their actual products. Coolant suppliers and vehicle manufacturers should agree on the exact test procedures and acceptance criteria on an individual basis.

    TABLE 3 Physical and Chemical Requirements for Predilute

    PropertyType IIIType IVType VIASTM Test Method
    Relative density
    15.5/15.5°C (60/60°F)
    1.065 min1.025 min1.065 minAD1122, D5931
    Freezing point,B, C °C (°F),
    undiluted
    36.4 (33.5) max\t31.0 (23.8) max36.4 (33.5 (max)D1177, D6660
    Boiling point,B,D °C (°F),
    undiluted
    108 (226) min104 (219) min108 (226) minD1120
    Ash content, mass %2.5 max2.5 max2.5 maxD1119
    pH, undiluted7.5 to 117.5 to 117.5 to 11D1287
    Chloride, μg/g25 max25 max25 maxD3634, D5827E
    Water, mass %not
    applicable
    not
    applicable
    not
    applicable
    D1123
    Reserve alkalinity, mLreportFreportFreportFD1121
    Effect on automotive finish
    (use clear coat thermoset
    urethane or acrylic urethane finish)
    no effectno effectno effectD1882G

    A Type VI engine coolant is ethylene glycol base containing glycerin. Other ingredients that do not meet Specifications E1177 and D7640 shall not be substituted in this blend.

    B For purposes of determining conformance with this specification, an observed value shall be rounded to the nearest unit in the last right-hand digit used in expressing the specification limit, in accordance with the rounding method of Practice E29.

    C Test Methods D1177 and D6660 work with glycol/glycerin mixtures. Field test devices based on refractive index and density are under development.

    D Some precipitate may be observed at the end of the test. This should not be cause for rejection.

    E In case of dispute, D3634 shall be the preferred test method.

    F Value as agreed upon between the supplier and the customer.

    G Currently, many vehicle manufacturers prepare test panels using the specific paint finishes employed on their actual products. Coolant suppliers and vehicle manufacturers should agree on the exact test procedures and acceptance criteria on an individual basis.

    TABLE 4 Performance RequirementsA

    PropertySpecific ValuesASTM Test MethodTest Solution Concentration,
    vol % Product
    Corrosion in glasswareD1384B33
    Weight loss, mg/specimen
    copper10 max
    solder30 max
    brass10 max
    steel10 max
    cast iron10 max
    aluminum30 max
    Simulated service testD2570C44
    Weight loss, mg/specimen
    copper20 max
    solder60 max
    brass20 max
    steel20 max
    cast iron20 max
    aluminum60 max
    Corrosion of Cast Aluminum Alloys at
    Heat-Rejecting Surfaces, mg/cm2/week1.0 maxD4340D25
    FoamingD1881E33
    Volume, mL150 max
    Break time, s5 max
    Cavitation-Erosion8 minD2809F17
    Rating for pitting, cavitation, and erosion of the water pump

    A For engine coolant concentrates, test solutions shall be prepared in accordance with the directions provided in the individual ASTM test methods noted. For prediluted engine coolants, prepare test solutions using the directions provided in Footnotes B through F.

    B For prediluted coolants, prepare the test solution by mixing 67 volume % of the adjusted (see 5.6) prediluted product with 33 volume % ASTM Type IV reagent water. Add 99 mg of sodium sulfate, 110 mg of sodium chloride, and 92 mg of sodium bicarbonate per litre of test solution.

    C For prediluted coolants, prepare the test solution by mixing 88 volume % of the adjusted (see 5.6) prediluted product with 12 volume % ASTM Type IV reagent water. Add 83 mg of sodium sulfate, 92 mg of sodium chloride, and 77 mg of sodium bicarbonate per litre of test solution.

    D For prediluted coolants, prepare the test solution by mixing 50 volume % of the adjusted (see 5.6) prediluted product with 50 volume % ASTM Type IV reagent water. Add 165 mg of sodium chloride per litre of test solution.

    E For prediluted coolants, prepare the test solution by mixing 67 volume % of the adjusted (see 5.6) prediluted product with 33 volume % ASTM Type II reagent water.

    F For prediluted coolants, prepare the test solution by mixing 33 volume % of the adjusted (see 5.6) prediluted product with 67 volume % ASTM Type IV reagent water. Add 123 mg of sodium sulfate, 137 mg of sodium chloride, and 115 mg of sodium bicarbonate per litre of test solution.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D512 Test Methods for Chloride Ion In Water

    D516 Test Method for Sulfate Ion in Water

    D1119 Test Method for Percent Ash Content of Engine Coolants

    D1120 Test Method for Boiling Point of Engine Coolants

    D1121 Test Method for Reserve Alkalinity of Engine Coolants and Antirusts

    D1122 Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer

    D1123 Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method

    D1126 Test Method for Hardness in Water

    D1177 Test Method for Freezing Point of Aqueous Engine Coolants

    D1287 Test Method for pH of Engine Coolants and Antirusts

    D1293 Test Methods for pH of Water

    D1384 Test Method for Corrosion Test for Engine Coolants in Glassware

    D1881 Test Method for Foaming Tendencies of Engine Coolants in Glassware

    D1882 Test Method for Effect of Cooling System Chemical Solutions on Organic Finishes for Automotive Vehicles

    D2570 Test Method for Simulated Service Corrosion Testing of Engine Coolants

    D2809 Test Method for Cavitation Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps With Engine Coolants

    D3321 Test Method for Use of the Refractometer for Field Test Determination of the Freezing Point of Aqueous Engine Coolants

    D3634 Test Method for Trace Chloride Ion in Engine Coolants

    D4327 Test Method for Anions in Water by Suppressed Ion Chromatography

    D4340 Test Method for Corrosion of Cast Aluminum Alloys in Engine Coolants Under Heat-Rejecting Conditions

    D4725 Terminology for Engine Coolants

    D4985 Specification for Low Silicate Ethylene Glycol Base Engine Coolant for Heavy Duty Engines Requiring a Pre-Charge of Supplemental Coolant Additive (SCA)

    D5827 Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography

    D5931 Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter

    D6130 Test Method for Determination of Silicon and Other Elements in Engine Coolant by Inductively Coupled Plasma-Atomic Emission Spectroscopy

    D6210 Specification for Fully-Formulated Glycol Base Engine Coolant for Heavy-Duty Engines

    D6471 Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service

    D6472 Specification for Recycled Glycol Base Engine Coolant Concentrate for Automobile and Light-Duty Service

    D6660 Test Method for Freezing Point of Aqueous Ethylene Glycol Base Engine Coolants by Automatic Phase Transition Method

    D7640 Specification for Engine Coolant Grade Glycerin

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E394 Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method

    E1177 Specification for Engine Coolant Grade Glycol

    Other Documents

    FederalMethod2540B Total Dissolved Solids Dried at 103-105C Standard Method for the Examination of Water and Wastewater. American Public Health Association, et al, 1015 15th Street, N.W. Washington, DC 20005.


    ICS Code

    ICS Number Code 71.100.45 (Refrigerants and antifreezes)

    UNSPSC Code

    UNSPSC Code 25174004(Engine coolant)


    DOI: 10.1520/D3306-11

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