ASTM D3306-21

ASTM D3306-21 - 1.11.2021

1. Scope

1.1?This specification covers the requirements for ethylene glycol or propylene glycol or ethylene glycol containing glycerin base engine coolants used in automobiles or other light-duty service cooling systems. When concentrates are used at 40 % to 60 % concentration (allowance to 70 % concentration agreement between manufacturer and user) by volume in water, or when prediluted glycol base engine coolants 50 volume % or higher engine coolant concentrate 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

Ethylene glycol base concentrate

Propylene glycol base concentrate

Ethylene glycol base concentrate
containing glycerin

III

Ethylene glycol predilute 50 volume % or higher engine coolant concentrate

Propylene glycol predilute 50 volume % or higher engine coolant concentrate

Ethylene glycol base predilute
containing glycerin 50 volume % or higher engine coolant concentrate

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 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.

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.

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.

2. Referenced Documents

Federal Method 2540B	Total Dissolved Solids Dried at 103-105C Standard Method for the Examination of Water and Wastewater. American Public Health Association, et al, 800 I Street, N.W. Washington, DC 20001-3710, http://www.apha.org.
E1177-23	Standard Specification for Engine Coolant Grade Glycol
D512-23	Standard Test Methods for Chloride Ion In Water
D516-22	Standard Test Method for Sulfate Ion in Water
D1119-22	Standard Test Method for Percent Ash Content of Engine Coolants
D1120-22	Standard Test Method for Boiling Point of Engine Coolants
D1121-11(2020)	Standard Test Method for Reserve Alkalinity of Engine Coolants and Antirusts
D1122-22	Standard Test Method for Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
D1123-22a	Standard Test Methods for Water in Engine Coolant Concentrate by the Karl Fischer Reagent Method (Includes all amendments and changes 9/21/2022).
D1126-17	Standard Test Method for Hardness in Water
D1177-22	Standard Test Method for Freezing Point of Aqueous Engine Coolants
D1287-11(2020)	Standard Test Method for pH of Engine Coolants and Antirusts
D4327-17	Standard Test Method for Anions in Water by Suppressed Ion Chromatography
D4340-19	Standard Test Method for Corrosion of Cast Aluminum Alloys in Engine Coolants Under Heat-Rejecting Conditions
D4725-15(2023)	Standard Terminology for Engine Coolants and Related Fluids
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)
D5827-22	Standard Test Method for Analysis of Engine Coolant for Chloride and Other Anions by Ion Chromatography
D5931-20	Standard Test Method for Density and Relative Density of Engine Coolant Concentrates and Aqueous Engine Coolants by Digital Density Meter
D6130-11(2018)	Standard Test Method for Determination of Silicon and Other Elements in Engine Coolant by Inductively Coupled Plasma-Atomic Emission Spectroscopy
D3321-19(2023)	Standard Test Method for Use of the Refractometer for Field Test Determination of the Freezing Point of Aqueous Engine Coolants
D1881-17	Standard Test Method for Foaming Tendencies of Engine Coolants in Glassware
D1882-17(2021)	Standard Test Method for Effect of Cooling System Chemical Solutions on Organic Finishes for Automotive Vehicles
D2570-16	Standard Test Method for Simulated Service Corrosion Testing of Engine Coolants
D2809-21	Standard Test Method for Cavitation Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps With Engine Coolants
D1384-24	Standard Test Method for Corrosion Test for Engine Coolants in Glassware
D1293-18	Standard Test Methods for pH of Water
D6471-10	Standard Specification for Recycled Prediluted Aqueous Glycol Base Engine Coolant (50 Volume % Minimum) for Automobile and Light-Duty Service (Withdrawn 2019)
D6472-10	Standard Specification for Recycled Glycol Base Engine Coolant Concentrate for Automobile and Light-Duty Service (Withdrawn 2019)
D6660-01(2023)	Standard Test Method for Freezing Point of Aqueous Ethylene Glycol Base Engine Coolants by Automatic Phase Transition Method
D7640-16(2021)	Standard Specification for Engine Coolant Grade Glycerin
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E394-22	Standard Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method
D3634-21	Standard Test Method for Trace Chloride Ion in Engine Coolants
D6210-17	Standard Specification for Fully-Formulated Glycol Base Engine Coolant for Heavy-Duty Engines