ASTM D6335-09
(Test Method)Standard Test Method for Determination of High Temperature Deposits by Thermo-Oxidation Engine Oil Simulation Test
Standard Test Method for Determination of High Temperature Deposits by Thermo-Oxidation Engine Oil Simulation Test
SIGNIFICANCE AND USE
The test method is designed to predict the high temperature deposit forming tendencies of an engine oil. This test method can be used to screen oil samples or as a quality assurance tool.
SCOPE
1.1 This test method covers the procedure to determine the amount of deposits formed by automotive engine oils utilizing the thermo-oxidation engine oil simulation test (TEOST ). An interlaboratory study (see Section 17) has determined it to be applicable over the range from 10 to 65 mg total deposits.
Note 1—Operational experience with the test method has shown the test method to be applicable to engine oils having deposits over the range from 2 to 180 mg total deposits.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Milligrams (mg), grams (g), millilitres (mL), and litres are the units provided, because they are an industry accepted standard.
1.2.2 Exception—Provided psig for information only in 6.2.
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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D6335 − 09
StandardTest Method for
Determination of High Temperature Deposits by Thermo-
1
Oxidation Engine Oil Simulation Test
This standard is issued under the fixed designation D6335; 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* 2.1.3 depositor rod casing—the sleeve that surrounds the
depositor rod and allows the flow of specimen around the
1.1 This test method covers the procedure to determine the
outside of the rod.
amount of deposits formed by automotive engine oils utilizing
2 3
2.1.4 drain tube—the tube connecting the outlet of the
thethermo-oxidationengineoilsimulationtest(TEOST ). An
depositor rod casing to the reaction chamber.
interlaboratory study (see Section 17) has determined it to be
applicable over the range from 10 to 65 mg total deposits.
2.1.5 end cap—the fitting to tighten the ceramic isolators
down onto the O-rings at the ends of the depositor rod casing.
NOTE 1—Operational experience with the test method has shown the
test method to be applicable to engine oils having deposits over the range
2.1.6 filter deposits—the mass in mg of the deposits col-
from 2 to 180 mg total deposits.
lected on the filter cartridge.
1.2 The values stated in SI units are to be regarded as
2.1.7 pump—the gear pump that controls the flow rate of
standard. No other units of measurement are included in this
sample through the depositor rod casing.
standard.
2.1.8 pump inlet tube—the tube connecting the reactor
1.2.1 Milligrams(mg),grams(g),millilitres(mL),andlitres
chamber to the pump.
are the units provided, because they are an industry accepted
standard. 2.1.9 pump outlet tube—thetubeconnectingthepumptothe
1.2.2 Exception—Provided psig for information only in 6.2. depositor rod casing.
1.3 This standard does not purport to address all of the 2.1.10 reactor chamber—thereservoirthatcontainsthebulk
safety concerns, if any, associated with its use. It is the of the sample throughout the test. It has a drain valve for
responsibility of the user of this standard to establish appro- removing sample at the end of the test and an inlet valve for
priate safety and health practices and determine the applica- adding gases to the sample. The chamber contains a magnetic
bility of regulatory limitations prior to use. stir bar well in the bottom in which a stir bar is placed to mix
the reactor contents.
2. Terminology
2.1.11 rod deposits—themass,inmilligrams,ofthedeposits
collected on the depositor rod.
2.1 Definitions of Terms Specific to This Standard:
2.1.1 ceramic isolator—the fitting that compresses the
2.1.12 rod O-rings—the O-rings that seal the outside of the
O-ring into the depositor rod casing and isolates the depositor
rod and the depositor rod casing to prevent sample leaks.
rod casing from the voltage applied to the depositor rod.
2.1.13 side nut—the fitting creates a seal to prevent sample
2.1.2 depositor rod—the steel rod on which the deposits are
leaking from the front holes of the depositor rod casing.
collected. It is resistively heated through a temperature cycle
2.1.14 thermocouple lock collar—a fitting that tightens on
during the test.
the thermocouple to ensure the thermocouple is at the correct
depth when placed inside the rod.
2.1.15 total deposits—the rod deposits plus the filter depos-
1
This test method is under the jurisdiction of ASTM Committee D02 on
its.
Petroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
Subcommittee D02.09.0G on Oxidation Testing of Engine Oils.
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
3. Summary of Test Method
in 1998. Last previous edition approved in 2003 as D6335–03b. DOI: 10.1520/
3.1 A sample of the engine oil at a temperature of 100°C
D6335-09.
2
TEOST is a trademark of the Tannas Co. (Reg. 2001396), Tannas Company,
that contains ferric napthenate and is in contact with nitrous
4800 James Savage Rd., Midland, MI 48642.
oxide and moist air is pumped at a set flow rate past a tared
3
The Development of Thermo-Oxidation Engine Oil Simulation Test (TEOST),
depositor rod.The rod is resistively heated through twelve, 9.5
Society of Automotive Engineers (SAE No. 932837), 400 Commonwealth Dr.,
Warrendale, PA 15096-0001. min temperature cycles that go from 200 to 480°C. When the
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6335 − 09
FIG. 1 Thermo-oxidation Engine Oil Simulation Test (TEOST)
twelve cycl
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D6335–03b Designation:D6335–09
Standard Test Method for
Determination of High Temperature Deposits by Thermo-
1
Oxidation Engine Oil Simulation Test
This standard is issued under the fixed designation D 6335; 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.
1. Scope*
1.1 This test method covers the procedure to determine the amount of deposits formed by automotive engine oils utilizing the
2 3
thermo-oxidation engine oil simulation test (TEOST ). An interlaboratory study (see Section 17) has determined it to be
applicable over the range from 10 to 65 mg total deposits.
NOTE 1—Operational experience with the test method has shown the test method to be applicable to engine oils having deposits over the range from
2 to 180 mg total deposits.
1.2The values stated in SI units are to be regarded as the standard.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Milligrams (mg), grams (g), millilitres (mL), and litres are the units provided, because they are an industry accepted
standard.
1.2.2 Exception—Provided psig for information only in 6.2.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Terminology
2.1 Definitions of Terms Specific to This Standard:
2.1.1 ceramic isolator—the fitting that compresses the o-ringO-ring into the depositor rod casing and isolates the depositor rod
casing from the voltage applied to the depositor rod.
2.1.2 depositor rod—thesteelrodonwhichthedepositsarecollected.Itisresistivelyheatedthroughatemperaturecycleduring
the test.
2.1.3 depositor rod casing—the sleeve that surrounds the depositor rod and allows the flow of specimen around the outside of
the rod.
2.1.4 drain tube—the tube connecting the outlet of the depositor rod casing to the reaction chamber.
2.1.5 end cap—the fitting to tighten the ceramic isolators down onto the o-ringsO-rings at the ends of the depositor rod casing.
2.1.6 filter deposits—the mass in mg of the deposits collected on the filter cartridge.
2.1.7 pump—the gear pump that controls the flow rate of sample through the depositor rod casing.
2.1.8 pump inlet tube—the tube connecting the reactor chamber to the pump.
2.1.9 pump outlet tube—the tube connecting the pump to the depositor rod casing.
2.1.10 reactor chamber—thereservoirthatcontainsthebulkofthesamplethroughoutthetest.Ithasadrainvalveforremoving
sample at the end of the test and an inlet valve for adding gases to the sample. The chamber contains a magnetic stir bar well in
the bottom in which a stir bar is placed to mix the reactor contents.
2.1.11 rod deposits—the mass, in milligrams, of the deposits collected on the depositor rod.
2.1.12 rod o-ringsO-rings—the o-ringsO-rings that seal the outside of the rod and the depositor rod casing to prevent sample
leaks.
2.1.13 side nut—the fitting creates a seal to prevent sample leaking from the front holes of the depositor rod casing.
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.09.0G
on Oxidation Testing of Engine Oils.
Current edition approved May 10, 2003.June 1, 2009. Published July 2003.2009. Originally approved in 1998. Last previous edition approved in 2003 as D 6335–03ab.
2
TEOST is a trademark of the Tannas Co. (Reg. 2001396).
2
TEOST is a trademark of the Tannas Co. (Reg. 2001396), Tannas Company, 4800 James Savage Rd., Midland, MI 48642.
3
TheDevelopmentofThermo-OxidationEngineOilSimulationTest(TEOST),SocietyofAutomotiveEngineers(SAENo.932837),400CommonwealthDr.,Warrendale,
PA 15096-0001.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6335–09
2.1.14 thermocouple lock collar—a fitting that tightens on the thermocouple to ensure the thermocouple is at the correct depth
when placed inside the rod.
2.1.15 total deposits—the rod deposits plus the filt
...
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