ASTM D5828-97(2023)

Standard Test Method for Compatibility of Supplemental Coolant Additives (SCAs) and Engine Coolant Concentrates

SIGNIFICANCE AND USE
5.1 This test was developed to mimic the formation of insolubles observed in some heavy-duty diesel cooling systems during the mid 1980s. It measures the compatibility of SCA and coolant concentrate solutions according to their tendency to form insolubles in service.3 Such insoluble materials may accumulate within a cooling system, restrict heat transfer through radiator cores, and contribute to the damage of components such as water pumps.
SCOPE
1.1 This test method covers determination of the compatibility of commercial SCA and commercial ethylene and propylene glycol engine coolant concentrates. This test method focuses on the solubility of specific chemical species formed in the engine coolant. The short duration of the test (24 h), among other restrictions, makes the test method of limited use for sorting out a variety of chemical compatibility problems in which a component of the SCA may react with a component of the coolant additive package. The test as currently written also does not deal with the issue of hard water compatibility, in which a component of the coolant or SCA additive package reacts with the hardness (Ca and Mg) to form a precipitate.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.  
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.  
1.4 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.

General Information

• Status: Published
• Publication Date: 31-Aug-2023
• ICS: 71.100.45 - Refrigerants and antifreezes
• Technical Committee: D15 - Engine Coolants and Related Fluids
• Drafting Committee: D15.11 - Heavy Duty Coolants

Standards Content (Sample)

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.
Designation: D5828 − 97 (Reapproved 2023)
Standard Test Method for
Compatibility of Supplemental Coolant Additives (SCAs) and
1
Engine Coolant Concentrates
This standard is issued under the fixed designation D5828; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Supplemental coolant additives (SCAs) are used to impart special properties, usually resistance to
cavitation corrosion, to engine coolants used in diesel engines with replaceable cylinder liner sleeves.
Engines with this design require additives that are not normally found in commercial engine coolant
concentrates.
1. Scope 2. Referenced Documents
2
1.1 This test method covers determination of the compat- 2.1 ASTM Standards:
ibility of commercial SCA and commercial ethylene and E691 Practice for Conducting an Interlaboratory Study to
propylene glycol engine coolant concentrates. This test method Determine the Precision of a Test Method
focuses on the solubility of specific chemical species formed in D1193 Specification for Reagent Water
the engine coolant. The short duration of the test (24 h), among D1796 Test Method for Water and Sediment in Fuel Oils by
other restrictions, makes the test method of limited use for the Centrifuge Method (Laboratory Procedure)
sorting out a variety of chemical compatibility problems in D3585 Specification for ASTM Reference Fluid for Coolant
which a component of the SCA may react with a component of Tests
the coolant additive package. The test as currently written also
3. Terminology
does not deal with the issue of hard water compatibility, in
which a component of the coolant or SCA additive package 3.1 Definitions of Terms Specific to This Standard:
reacts with the hardness (Ca and Mg) to form a precipitate.
3.1.1 engine coolant concentrate—an undiluted ethylene or
propylene glycol containing additives and only a small amount
1.2 The values stated in SI units are to be regarded as
of water, usually less than 5 %.
standard. The values given in parentheses are mathematical
3.1.2 reference engine coolant concentrate—a standard ma-
conversions to inch-pound units that are provided for informa-
tion only and are not considered standard. terial prepared according to the formulary given in Annex A2
of this test method. This material should not be confused with
1.3 This standard does not purport to address all of the
reference coolant in accordance with Specification D3585.
safety concerns, if any, associated with its use. It is the
3.1.3 reference supplemental coolant additive (SCA)—a
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- standard SCA prepared according to the formulary given in
Annex A1 of this test method.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
3.1.4 supplemental coolant additive—a liquid or solid ma-
dance with internationally recognized principles on standard-
terial that is added to a coolant at a specified concentration.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4. Summary of Test Method
mendations issued by the World Trade Organization Technical
4.1 A mixture of engine coolant concentrate and deionized
Barriers to Trade (TBT) Committee.
water containing approximately twice the recommended con-
centration of SCA is heated to 88 °C (190 °F) for 24 h. The
solution is centrifuged after returning to ambient temperature,
1
This test method is under the jurisdiction of ASTM Committee D15 on Engine
Coolants and Related Fluids and is the direct responsibility of Subcommittee D15.11
2
on Heavy Duty Coolants. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2023. Published September 2023. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2018 as D5828 – 97 (2018). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D5828–97R23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5828 − 97 (2023)
and the amount of insoluble material is determined volumetri- 7.2 Coolant Concentrate, and SCA for eval
...