ASTM D6335-16
(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
4.1 The test method is designed to predict the high temperature deposit forming tendencies of an engine oil subject to the added oxidizing stress of a turbocharger. 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 (TEOST2).3 An interlaboratory study (see Section 17) has determined it to be applicable over the range from 10 mg 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 mg to 180 mg total deposits.
1.2 The values stated in SI units are to be regarded as standard.
1.2.1 Milligrams (mg), grams (g), milliliters (mL), and liters are the units provided, because they are an industry accepted standard.
1.2.2 Exception—Pounds per square inch gauge (psig) is provided 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 − 16
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 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.
4
1. Scope* 2.1.2 depositor rod , n—a patented, specially made,
numbered, and registered steel rod (used once for each test) on
1.1 This test method covers the procedure to determine the
whichthedepositsarecollected.Itisresistivelyheatedthrough
amount of deposits formed by automotive engine oils utilizing
2 3 a series of twelve temperature cycles during the test to
thethermo-oxidationengineoilsimulationtest(TEOST ). An
temperatures established and controlled by a thermocouple
interlaboratory study (see Section 17) has determined it to be
inserted to a pre-determined depth in the hollow rod.
applicable over the range from 10mg to 65mg total deposits.
2.1.3 depositor rod casing, n—the sleeve that surrounds the
NOTE 1—Operational experience with the test method has shown the
depositor rod and allows the flow of the test oil up and around
test method to be applicable to engine oils having deposits over the range
the outside of the rod at a flow rate such that every volume
from 2mg to 180mg total deposits.
element of the test oil is exposed to the same heating cycle.
1.2 The values stated in SI units are to be regarded as
2.1.4 drain tube, n—the tube connecting the upper outlet of
standard.
the depositor rod casing to the reaction chamber.
1.2.1 Milligrams(mg),grams(g),milliliters(mL),andliters
are the units provided, because they are an industry accepted 2.1.5 end cap, n—the fitting to tighten the ceramic isolators
standard.
onto the O-rings at both ends of the depositor rod casing.
1.2.2 Exception—Pounds per square inch gauge (psig) is
2.1.6 filter deposits, n—the mass in milligrams of the
provided for information only in 6.2.
deposits collected after test on a special multi-layer filter
1.3 This standard does not purport to address all of the cartridge used once for each test.
safety concerns, if any, associated with its use. It is the
2.1.7 pump, n—the gear pump that is used to control the
responsibility of the user of this standard to establish appro-
flow rate of the test oil through the depositor rod casing.
priate safety and health practices and determine the applica-
2.1.8 pump inlet tube, n—the tube connecting the reactor
bility of regulatory limitations prior to use.
chamber to the pump.
2. Terminology 2.1.9 pump outlet tube, n—the tube connecting the pump to
the depositor rod casing.
2.1 Definitions of Terms Specific to This Standard:
2.1.10 reactor chamber, n—the heated reservoir that con-
2.1.1 ceramic isolator, n—the fitting that compresses the
tainsthebulk(approximately100mL)ofthe116mLoftestoil
O-ring into the depositor rod casing and isolates the depositor
sample circulated past the deposit rod during the test. The
rod casing from the voltage applied to the depositor rod.
reactor is equipped with a magnetic stir-bar to continuously
mix the chamber contents.
1
This test method is under the jurisdiction of ASTM Committee D02 on
2.1.10.1 Discussion—In the reaction chamber, moist air and
Petroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
Subcommittee D02.09.0G on Oxidation Testing of Engine Oils.
nitrous oxide are each bubbled at a controlled rate of
Current edition approved Oct. 1, 2016. Published November 2016. Originally
3.5mL⁄min through a channel opening at the bottom of the
approved in 1998. Last previous edition approved in 2009 as D6335 – 09. DOI:
10.1520/D6335-16.
2 4
TEOST is a trademark of the Tannas Co. (Reg. 2001396), Tannas Company, The sole source of supply of the apparatus known to the committee at this time
4800 James Savage Rd., Midland, MI 48642. is Tannas Co., 4800 James Savage Rd., Midland, MI 48642. If you are aware of
3
The Development of Thermo-Oxidation Engine Oil Simulation Test (TEOST), alternative suppliers, please provide this information to ASTM International
Society of Automotive Engineers (SAE No. 932837), 400 Commonwealth Dr., Headquarters.Your comments will receive careful consideration at a meeting of the
1
Warrendale, PA 15096-0001. responsible technical committee, which you may attend.
*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
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D6335 − 16
FIG. 1 Thermo-oxidation Engine Oil Simulation Test (TEOS
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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 − 09 D6335 − 16
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 D6335; 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 1010 mg to 65 mg 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
22 mg to 180 mg 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), millilitresmilliliters (mL), and litresliters are the units provided, because they are an industry
accepted standard.
1.2.2 Exception—Provided psig Pounds per square inch gauge (psig) is provided 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—isolator, n—the fitting that compresses the O-ring into the depositor rod casing and isolates the
depositor rod casing from the voltage applied to the depositor rod.
4
2.1.2 depositor rod—rod , n—the steel rod a patented, specially made, numbered, and registered steel rod (used once for each
test) on which the deposits are collected. It is resistively heated through a temperature cycle during the test.series of twelve
temperature cycles during the test to temperatures established and controlled by a thermocouple inserted to a pre-determined depth
in the hollow rod.
2.1.3 depositor rod casing—casing, n—the sleeve that surrounds the depositor rod and allows the flow of specimen the test oil
up and around the outside of the rod.rod at a flow rate such that every volume element of the test oil is exposed to the same heating
cycle.
2.1.4 drain tube—tube, n—the tube connecting the upper outlet of the depositor rod casing to the reaction chamber.
2.1.5 end cap—cap, n—the fitting to tighten the ceramic isolators down onto the O-rings at theboth ends of the depositor rod
casing.
2.1.6 filter deposits—deposits, n—the mass in mgmilligrams of the deposits collected on the filter cartridge.after test on a special
multi-layer filter cartridge used once for each test.
2.1.7 pump—pump, n—the gear pump that controls is used to control the flow rate of sample the test oil through the depositor
rod casing.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility of Subcommittee
D02.09.0G on Oxidation Testing of Engine Oils.
Current edition approved June 1, 2009Oct. 1, 2016. Published July 2009November 2016. Originally approved in 1998. Last previous edition approved in 20032009 as
D6335–03b. DOI: 10.1520/D6335-09. – 09. DOI: 10.1520/D6335-16.
2
TEOST is a trademark of the Tannas Co. (Reg. 2001396), Tannas Company, 4800 James Savage Rd., Midland, MI 48642.
3
The Development of Thermo-Oxidation Engine Oil Simulation Test (TEOST), Society of Automotive Engineers (SAE No. 932837), 400 Commonwealth Dr., Warrendale,
PA 15096-0001.
4
The sole source of supply of the apparatus known to the committee at this time is Tannas Co., 4800 James Savage Rd., Midland, MI 48642. If you are aware of alternative
suppliers, please provide this information to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical
1
committee, which you may attend.
*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 − 16
2.1.8 pump inle
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