ASTM D3147-06

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Designation: D3147 − 06
StandardTest Method for Testing
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Stop-Leak Additives for Engine Coolants
This standard is issued under the fixed designation D3147; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope simulate leaks in an engine cooling system. The effectiveness
of the stop-leak material is measured by its ability to seal the
1.1 This test method covers screening procedures for the
leaks under the prescribed conditions of flow rate, temperature,
preliminary evaluation of leak-stopping materials intended for
pressure, and time.
use in engine cooling systems. (Heavy-duty users are referred
to X1.2.21 in Specification D4485 for additional information.)
4.2 The presence of particles in the test material that are
larger than 0.84 mm (0.033 in.) or the presence of gumming or
1.2 The values stated in SI units are to be regarded as the
gelling in stop-leak additives is determined by screening a test
standard. The values given in parentheses are for information
solution through a 850-µm (U.S. No. 20) standard sieve. The
only.
screening is done both before and after the circulating test.
1.3 This standard does not purport to address all of the
Particles that remain on the sieve may be too large to pass
safety concerns, if any, associated with its use. It is the
through some passages of the cooling system.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Significance and Use
bility of regulatory limitations prior to use. Specific warning
statements are given in 10.1. 5.1 The screening procedures simulate the conditions of
temperature, pressure, and circulation encountered in service.
2. Referenced Documents
This test method will indicate whether a product is suitable for
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2.1 ASTM Standards: further evaluation in vehicles.
D1176 Practice for Sampling and Preparing Aqueous Solu-
tions of Engine Coolants orAntirusts forTesting Purposes 6. Apparatus (See Fig. 1)
6.1 Reservoir:
3. Terminology
6.1.1 The reservoir shall be constructed of stainless steel,
3.1 Definitions of Terms Specific to This Standard:
aluminum, or brass, 260 by 175 by 260-mm (10 by 7 by 10 in.)
3.1.1 leaking—frequent drops forming (more than 5 drops/
high, and the total capacity of the assembled unit shall be
min).
between12and13.5L(3.2to3.6gal).Thereservoirshallhave
3.1.2 sealed—completely plugged with no leaking or seep-
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a 20-mm ( ⁄4-in.) flange at the top, to which a cover plate is
ing.
fitted.
3.1.3 seeping—occasional drops forming (fewer than 5
6.1.2 The reservoir and cover shall have a minimum thick-
drops/min).
ness of 1.6 mm (0.06 in.) in order to withstand a pressure of
140 kPa (20 psi).
4. Summary of Test Method
6.1.3 A drain shall be located either on one side or the
4.1 Aheated test solution is circulated through a pressurized
bottom of the reservoir to facilitate drainage of the test
cubical metal reservoir which contains a slit and holes to
solution. The reservoir outlet to the circulating pump (suction
side) shall be located near the bottom of Side C. The reservoir
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inlet from the circulating pump (discharge side) shall be
This test method is under the jurisdiction ofASTM Committee D15 on Engine
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Coolants and Related Fluids and is the direct responsibility of Subcommittee
located near the top of Side D.A13-mm ( ⁄2-in.) elbow shall be
D15.09 on Simulated Service Tests.
welded to the reservoir inlet opening (inner surface of Side D)
Current edition approved April 1, 2006. Published April 2006. Originally
so that the liquid flow is directed towards Side A.
approved in 1972. Last previous edition approved in 1999 as D3147 – 94(1999).
DOI: 10.1520/D3147-06.
6.1.4 The cover plate of the reservoir shall be attached with
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bolts and sealed with neoprene gasket material. Openings
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
accommodate a pressure gage (0 to 10 kPa (0 to 30 psi)
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. minimum)/vent valve assembly.
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D3147 − 06
A,B,C,D—Sides of reservoir R—Regulated air, 103 kPa (15 psi)
G—Pressure gage, 0-210 kPa, (0-30 psi) vent valve T—Thermocouple foil, temperature controller, and well
H—Brass test section, h
...