ASTM D2847-07

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D2847 − 07
StandardPractice for
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Testing Engine Coolants in Car and Light Truck Service
This standard is issued under the fixed designation D2847; 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 4. Summary of Practice
1.1 This practice covers the procedure for evaluating corro- 4.1 Standardmetalcorrosionspecimens,mountedinspecial
sion protection and performance of an engine coolant in holders, are installed in the coolant flow of the test vehicles.
passenger car and light truck service. The coolant is tested at the recommended concentration in a
specified test water. A minimum of five test vehicles per
NOTE 1—Coolant evaluation in vehicle service may require consider-
coolant is required. The test duration in terms of time or
able time and expense; therefore, the product should be pretested in the
mileage should be consistent with the recommended service
laboratory for general acceptability. Tests may vary from small, closely
controlled tests, to large tests where close control is not always practical.
life of the coolant. The vehicle, corrosion specimens, and
coolant are inspected according to a prescribed schedule to
1.2 The units quoted in this practice are to be regarded as
provide the basis for coolant evaluation.
standard. The values given in parentheses are approximate
equivalents for information only.
4.2 A detailed cleaning and conditioning procedure is es-
sential to obtain statistically significant and reproducible re-
1.3 This standard does not purport to address all of the
sults. New, or nearly new, vehicles are preferred for field tests.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific precau-
5.1 The data obtained from the use of this practice will
tionary statements are given in Section 7 and Note A1.1.
provide a basis for the evaluation of coolant performance in
passenger car and light truck service. The data obtained may
2. Referenced Documents
also be used to provide added significance to the data obtained
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2.1 ASTM Standards: from simulated service and engine dynamometer tests.
D1121Test Method for Reserve Alkalinity of Engine Cool-
6. Apparatus
ants and Antirusts
D1287TestMethodforpHofEngineCoolantsandAntirusts
6.1 Test Vehicles— In selecting vehicles to be used to
D1384Test Method for Corrosion Test for Engine Coolants
conduct field tests of coolants intended for automobiles and
in Glassware
light trucks, consideration should be given to the current range
D1881Test Method for Foaming Tendencies of Engine
of cooling system designs and materials. It is advisable to
Coolants in Glassware
include both brazed aluminum and soldered copper/brass
radiators as well as engines made of cast iron and those with
3. Terminology
aluminum heads or blocks, or both. A matrix including every
3.1 Definitions: possible variable combination of such features is not required,
3.1.1 engine coolant—a fluid used to transfer heat from an especially if vehicles representing the extremes are included in
engine to the radiator, usually containing specific amounts of the field tests. This includes aluminum engine with aluminum
glycols, water, corrosion inhibitors, and a foam suppressor. radiator and heater core, cast iron engine with copper/brass
radiator and heater core, and a cast iron engine with an
aluminum radiator and a copper/brass heater core. Pressurized
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This practice is under the jurisdiction of ASTM Committee D15 on Engine
surge tanks as well as unpressurized coolant overflow reser-
Coolants and is the direct responsibility of Subcommittee D15.10 on Dynamometer
voirs should be tested. Select vehicles that will be subjected to
and Road Tests.
a wide range of operating schedules. These ranges should
Current edition approved April 1, 2007. Published April 2007. Originally
include high-usage vehicles which accumulate miles rapidly,
approved in 1969. Last previous edition approved in 2004 as D2847–99(2004).
DOI: 10.1520/D2847-07.
vehicles operationally biased toward higher temperatures, and
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
low-mileage vehicles (<1000 miles/month) that can develop
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
acceleratedlocalizedcorrosionduetonon-flowingcoolant.No
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. single operating schedule is preferred
...