ASTM D7518-09

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D7518 – 09
Standard Specification for
1,3 Propanediol (PDO) Base Engine Coolant for Automobile
and Light-Duty Service
This standard is issued under the fixed designation D7518; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1120 Test Method for Boiling Point of Engine Coolants
D1121 Test Method for ReserveAlkalinity of Engine Cool-
1.1 This specification covers the requirements for 1,3 pro-
ants and Antirusts
panediol base engine coolants used in automobiles or other
D1122 Test Method for Density or Relative Density of
light-dutyservicecoolingsystems.Whenconcentratesareused
EngineCoolantConcentratesandEngineCoolantsByThe
at 40 to 70 % concentration by volume in water, or when
Hydrometer
prediluted glycol base engine coolants (50 volume % mini-
D1123 Test Methods for Water in Engine Coolant Concen-
mum) are used without further dilution, they will function
trate by the Karl Fischer Reagent Method
effectively to provide protection against freezing, boiling, and
D1126 Test Method for Hardness in Water
corrosion.
D1177 Test Method for Freezing Point of Aqueous Engine
1.2 The coolants governed by this specification are catego-
Coolants
rized as follows:
D1287 Test Method for pH of Engine Coolants and Anti-
Coolant Type Description
rusts
D1293 Test Methods for pH of Water
I 1,3 Propanediol base concentrate
II 1,3 Propanediol predilute (50 vol %)
D1384 Test Method for CorrosionTest for Engine Coolants
in Glassware
NOTE 1—This specification is based on the knowledge of the perfor-
D1881 Test Method for Foaming Tendencies of Engine
mance of engine coolants prepared from new or virgin ingredients.
NOTE 2—This specification applies to automobiles and light-duty Coolants in Glassware
service. A specification for heavy-duty engine service is under develop-
D1882 TestMethodforEffectofCoolingSystemChemical
ment.
Solutions on Organic Finishes for Automotive Vehicles
1.3 The values stated in SI units are to be regarded as the D1888 Methods of Test for Particulate and Dissolved Mat-
standard. The values given in parentheses are for information ter in Water
D2570 Test Method for Simulated Service Corrosion Test-
only.
1.4 This standard does not purport to address all of the ing of Engine Coolants
D2809 Test Method for Cavitation Corrosion and Erosion-
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- Corrosion Characteristics of Aluminum Pumps With En-
gine Coolants
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. D3321 Test Method for Use of the Refractometer for Field
Test Determination of the Freezing Point of Aqueous
2. Referenced Documents
Engine Coolants
2.1 ASTM Standards: D3634 Test Method for Trace Chloride Ion in Engine
D512 Test Methods for Chloride Ion In Water Coolants
D516 Test Method for Sulfate Ion in Water D4327 Test Method for Anions in Water by Chemically
D1119 Test Method for Percent Ash Content of Engine Suppressed Ion Chromatography
Coolants D4340 TestMethodforCorrosionofCastAluminumAlloys
in Engine Coolants Under Heat-Rejecting Conditions
D4725 Terminology for Engine Coolants
This specification is under the jurisdiction of ASTM Committee D15 on
D5827 Test Method for Analysis of Engine Coolant for
Engine Coolants and is the direct responsibility of Subcommittee D15.07 on
Specifications.
Chloride and Other Anions by Ion Chromatography
Current edition approved April 1, 2009. Published May 2009. DOI: 10.1520/
D5931 Test Method for Density and Relative Density of
D7518-09.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D7518 – 09
Engine Coolant Concentrates and Aqueous Engine Cool- absence of specific recommendations from the engine or
ants by Digital Density Meter vehicle manufacturers, see Appendix X1,or Table X1.1.If
D6130 Test Method for Determination of Silicon and Other such water is not available, use deionized (demineralized) or
Elements in Engine Coolant by Inductively Coupled distilled water. This procedure will minimize the formation of
Plasma-Atomic Emission Spectroscopy hard-water scale and avoid the introduction of mineral com-
D6660 TestMethodforFreezingPointofAqueousEthylene ponents, such as chlorides and sulfates, which can increase the
Glycol Base Engine Coolants byAutomatic Phase Transi- corrosion rate of aluminum and iron.
tion Method 4.6 Wheninstalledinaccordandewiththevehiclemanufac-
D7388 Specification for Engine Coolant Grade 1,3- turer’srecommendationsandthoseontheproductlabel,engine
Propanediol (PDO) coolant concentrates or prediluted glycol-base engine coolants
E29 Practice for Using Significant Digits in Test Data to shall be suitable for use in a properly maintained cooling
Determine Conformance with Specifications system (Appendix X1.1) in normal light-duty service for a
E394 Test Method for Iron in Trace Quantities Using the minimum of one year without adversely affecting fluid flow
1,10-Phenanthroline Method and heat transfer.
5. Detailed Requirements
3. Terminology
3.1 Definitions: 5.1 Glycol-base coolant concentrates and prediluted cool-
ants shall conform to the physical and chemical requirements
3.1.1 PDO base engine coolant, n—an engine coolant in
which the freeze point depressant is 1,3 propylene, with prescribed in Table 2 depending on coolant type (see 1.2).
5.2 TherequirementslistedinTable2forpredilutedcoolant
inhibitors to minimize foaming and corrosion.
3.1.2 For definitions of other terms used in this specifica- (Type II) are prescribed for the coolant as packaged, without
further dilution or adjustment.
tion, refer to Terminology D4725.
5.3 All coolant concentrates and prediluted coolants shall
4. General Requirements
conform to the performance requirements listed in Table 3.
5.4 Coolant concentrates shall be diluted for performance
4.1 Engine coolant concentrates or prediluted PDO base
testing as described in the individual ASTM test methods.
engine coolants shall be formulated with 1,3 propanediol
5.5 If necessary, the freezing point of prediluted coolants
meeting Specification D7388, water, and suitable corrosion
shall be adjusted with deionized water before proceeding with
inhibitors, dye, and a foam suppressor.
performance testing. The freezing point of prediluted PDO
4.2 PDO base engine coolant concentrates (Type I) may not
base coolants (Type II) shall be −27.8°C (−18.0°F).
contain ethylene glycol, diethylene glycol, triethylene glycol,
tetraethylene glycol. Similarly, prediulted PDO base coolants
(Type II) may not contain ethylene glycol, diethylene glycol,
TABLE 2 Physical and Chemical Requirements
triethylene glycol, tetraethylene glycol.
ASTM Test
Property
4.3 All engine coolant concentrates or prediluted PDO base
Type I Type II Method
engine coolants shall conform to the general requirements
Relative density, 15.5/ 1.050 to 1.065 1.025 min D1122, D5931
15.5°C (60/60°F)
given in Table 1.
A
Freezing point, °C (°F): −27.8 (−18.0) max D1177, D6660
4.4 Prediluted PDO (Type II) base engine coolants shall be
50 vol % in DI water
formulated using water that meets the following requirements:
Undiluted −27.8 (−18.0)
max
Property Specific Values ASTM Test Method
B
Boiling point °C (°F): D1120
Chlorides, µg/g (ppm (grains/gal)) 25 (1.5) max D512, D4327, D5827
50 vol % in DI water 102 (215) min
Sulfate, µg/g (ppm (grains/gal)) 50 (3.0) max D516, D4327, D5827
Undiluted 180 (356) min 102 (215) min
Hardness, as CaCo , µg/g 20 (1.2) max D1126, D6130
Ash content, mass % 5 max D1119
(ppm (grains/gal))
pH: D1287
pH 5.5 to 8.5 D1287, D1293
50 vol % in DI water 7.5 to 11
Undiluted 7.5 to 11
Iron, µg/g (ppm (grains/gal)) 1.0 (0.06) max D6130, E394
C C
Chloride, µg.g 25 max 25 max D3634 , D5827
NOTE 3—Prediluted coolants are intended for direct addition to an
Water, mass % 5 max not applicable D1123
D D
engine-coolingsystemwithnofurtherdilution.However,ifcircumstances Reserve alkalinity, mL report report D1121
E
Effect on automobile finish no effect no effect D1882
requireadditionandpredilutedaqueousenginecoolantisnoavailable,use
(use clear coat thermoset
the appropriate engine-coolant concentrate (Type I) diluted to 50 volume
urethane or acrylic
% with water of at least the quality outlined in Table X1.1.
urethane finish)
A
4.5 When diluting engine-coolant concentrates for actual
Forpurposesofdeterminingconformancewiththisspecification,anobserved
value shall be rounded “to the nearest unit” in the last right-hand digit used in
service, the water should be of such quality that it does not
expressing the specification limit, in accordance with the rounding method of
contain excessive solids, hardness salts, or chlorides. In the
Practice E29.
B
Some precipitate may be observed at the end of the test. This should not be
cause for rejection.
C
TABLE 1 General Requirements
In case of dispute, D3634 shall be the preferred test method.
D
Value as agreed upon between the supplier and the customer.
Proper
...