1.1 This specification covers the requirements for 1,3 propanediol 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 Type Description I 1,3 Propanediol base concentrate II 1,3 Propanediol predilute (50 vol %) NOTE 1—This specification is based on the knowledge of the performance of engine coolants prepared from new or virgin ingredients. NOTE 2—This specification applies to automobiles and light-duty service. A specification for heavy-duty engine service is under development.
1.3 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.
1.4 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.
ASTM D7518-20 Referenced Document
ASTM D1119 Standard Test Method for Percent Ash Content of Engine Coolants*, 2022-03-01 Update
ASTM D1120 Standard Test Method for Boiling Point of Engine Coolants
ASTM D1121 Standard Test Method for Reserve Alkalinity of Engine Coolants and Antirusts
ASTM D1122 Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
ASTM D1123 Standard Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method
ASTM D1126 Standard Test Method for Hardness in Water
ASTM D1177 Standard Test Method for Freezing Point of Aqueous Engine Coolants
ASTM D1287 Standard Test Method for pH of Engine Coolants and Antirusts
ASTM D1384 Standard Test Method for Corrosion Test for Engine Coolants in Glassware
ASTM D1881 Standard Test Method for Foaming Tendencies of Engine Coolants in Glassware
ASTM D1882 Standard Test Method for Effect of Cooling System Chemical Solutions on Organic Finishes for Automotive Vehicles
ASTM D2570 Standard Test Method for Simulated Service Corrosion Testing of Engine Coolants
ASTM D2809 Standard Test Method for Cavitation Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps With Engine Coolants
ASTM D3321 Standard Test Method for Use of the Refractometer for Field Test Determination of the Freezing Point of Aqueous Engine Coolants
ASTM D3634 Standard Test Method for Trace Chloride Ion in Engine Coolants
ASTM D4327 Standard Test Method for Anions in Water by Chemically Suppressed Ion Chromatography
ASTM D4340 Standard Test Method for Corrosion of Cast Aluminum Alloys in Engine Coolants Under Heat-Rejecting Conditions
ASTM D4725 Standard Terminology for Engine Coolants
ASTM D512 Standard Test Methods for Chloride Ion In Water
ASTM D516 Standard Test Method for Sulfate Ion in Water
ASTM D5827 Standard Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography
ASTM D5931 Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter
ASTM D6130 Standard Test Method for Determination of Silicon and Other Elements in Engine Coolant by Inductively Coupled Plasma-Atomic Emission Spectroscopy
ASTM D6660 Standard Test Method for Freezing Point of Aqueous Ethylene Glycol Base Engine Coolants by Automatic Phase Transition Method*, 2024-04-22 Update
ASTM D7388 Standard Specification for Engine Coolant Grade 1,3-Propanediol (PDO)*, 2023-03-01 Update
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E394 Standard Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method*, 2022-09-01 Update
ASTM D7518-20 history
2020ASTM D7518-20 Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
2010ASTM D7518-10(2015)e1 Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
2010ASTM D7518-10 Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service
2009ASTM D7518-09 Standard Specification for 1,3 Propanediol (PDO) Base Engine Coolant for Automobile and Light-Duty Service