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ASTM D7097-06a

(Test Method)

Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT

Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT

SIGNIFICANCE AND USE
The test method is designed to predict the deposit-forming tendencies of engine oil in the piston ring belt and upper piston crown area. Correlation has been shown between the TEOST MHT procedure and the TU3MH Peugeot engine test in deposit formation. Such deposits formed in the ring-belt area of a reciprocating engine piston can cause problems with engine operation and longevity. It is one of the required test methods in Specification D 4485 to define API Category-Identified engine oils.6
SCOPE
1.1 This test method covers the procedure to determine the mass of deposit formed on a specially constructed test rod exposed to repetitive passage of 8.5 g of engine oil over the rod in a thin film under oxidative and catalytic conditions at 285C. The range of applicability of the Moderately High Temperature Thermo-Oxidation Engine Test (TEOST MHT) test method as derived from an interlaboratory study is approximately 10 to 100 mg. However, experience indicates that deposit values from 1 to 150 mg or greater may be obtained.
1.2 This test method uses a patented instrument, method and patented, numbered, and registered depositor rods traceable to the manufacturer and made specifically for the practice and precision of the test method.Note 1
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
1.3 The values stated in SI units are to be regarded as standard. Although not an SI unit, the special name, litre (L) is allowed by SI for the cubic decimetre (dm3) and the millilitre (mL) for the SI cubic centimetre (cm3).
1.4 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.

General Information

Status
Historical
Publication Date
30-Nov-2006
ICS
75.100 - Lubricants, industrial oils and related products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.09.0G - Oxidation Testing of Engine Oils
Current Stage
Ref Project

Relations

Replaces
ASTM D7097-06 - Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT
Effective Date
01-Dec-2006
Replaced By
ASTM D7097-09 - Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT
Effective Date
01-Jun-2009
Referred By
ASTM D4485-22e1 - Standard Specification for Performance of Active API Service Category Engine Oils
Effective Date
01-Dec-2006

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ASTM D7097-06a - Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHTASTM D7097-06a - Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT
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ASTM D7097-06a - Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D7097–06a
Standard Test Method for
Determination of Moderately High Temperature Piston
Deposits by Thermo-Oxidation Engine Oil Simulation Test—
1
TEOST MHT
This standard is issued under the fixed designation D 7097; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 This test method covers the procedure to determine the
bility of regulatory limitations prior to use.
mass of deposit formed on a specially constructed test rod
exposedtorepetitivepassageof8.5gofengineoilovertherod
2. Referenced Documents
inathinfilmunderoxidativeandcatalyticconditionsat285°C.
5
2.1 ASTM Standards:
The range of applicability of the Moderately HighTemperature
2 D 4485 Specification for Performance of Engine Oils
Thermo-Oxidation EngineTest (TEOSTMHT ) test method as
D 6335 Test Method for Determination of High Tempera-
derived from an interlaboratory study is approximately 10 to
ture Deposits byThermo-Oxidation Engine Oil Simulation
100 mg. However, experience indicates that deposit values
Test
from 1 to 150 mg or greater may be obtained.
1.2 Thistestmethodusesapatentedinstrument,methodand
3. Terminology
patented, numbered, and registered depositor rods traceable to
3 3.1 Definitions of Terms Specific to This Standard:
the manufacturer and made specifically for the practice and
4 3.1.1 bubble airflow gage, n—a precision bore glass tube
precision of the test method.
marked in tenths of a millilitre used to measure accurately the
NOTE 1—ASTM International takes no position respecting the validity
flow rate of air around and past the depositor rod and to
ofanypatentrightsassertedinconnectionwithanyitemmentionedinthis
calibrate mass air flow controllers recommended for use in the
standard. Users of this standard are expressly advised that determination
procedure.
of the validity of any such patent rights, and the risk of infringement of
3.1.2 depositor rod deposits, n—particulate matter formed
such rights, are entirely their own responsibility.
on the depositor rod surface by oxidation of the thin film of
1.3 The values stated in SI units are to be regarded as
passingoilexposedtotherodtemperatureandair,andweighed
standard.Although not an SI unit, the special name, litre (L) is
after appropriate washing and drying to obtain the net mass
3
allowed by SI for the cubic decimetre (dm ) and the millilitre
gain.
3
(mL) for the SI cubic centimetre (cm ).
3.1.3 filter deposits, n—particulates washed from the de-
1.4 This standard does not purport to address all of the
positor rod after the test and collected on a special multi-layer
safety concerns, if any, associated with its use. It is the
filter cartridge.
2
3.1.4 MHT , n—an acronym for moderately high tempera-
1
ture.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
3.1.4.1 Discussion—The TEOST MHT procedure evaluates
D02.09.0G on Oxidation Testing of Engine Oils.
deposit formation at temperatures that are closely related to
Current edition approved Dec. 1, 2006. Published January 2007. Originally
those of the piston ring zone in reciprocating engines (as
approved in 2005. Last previous edition approved in 2006 as D 7097–06.
2
TEOST and MHT are registered trademarks of the Tannas Co. (Reg. 2001396). distinguished from the much higher temperatures associated
3
The sole source of supply of the apparatus known to the committee at this time
with the TEOST 33C, Test Method D 6335, procedure for
is Tannas Company, 4800 James Savage Rd., Midland, MI 48642. If you are aware
determining potential deposits in turbochargers).
of alternative suppliers, please provide this information to ASTM International
Headquarters.Your comments will receive careful consideration at a meeting of the
1
responsible technical committee, which you may attend.
4
The TEOST instrument, method and rod are patented. Interested parties are
5
invited to submit information regarding the identification of an alternative(s) to this For referenced ASTM standards, visit the ASTM website, www.astm.org, or
patented technology to ASTM Headquarters. Your comments will receive careful contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
consideration at a meeting of the responsible technical committee, which you may Standards volume information, refer to the standard’s Document Summary page on
attend. the ASTM website.
*A Summary of Chang
...

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ASTM
ASTM D7918-23(Test Method)
Standard Test Method for Measurement of Flow Properties and Evaluation of Wear, Contaminants, and Oxidative Properties of Lubricating Grease by Die Extrusion Method and Preparation

SIGNIFICANCE AND USE
5.1 Trending the wear, contamination, consistency, and oxidative properties of a lubricating grease is a crucial part of condition-monitoring programs. Changes in these properties or deviations from the new grease can be indicative of problems within the lubricated component, such as the mixing of incompatible thickener types, excessive wear or contaminant levels, or significant depletion of antioxidant levels. These test methods also makes it possible to develop trends that can be used to predict failures before they occur and allow for corrective action to be taken.
SCOPE
1.1 This test method covers the determination and evaluation of flow properties, wear levels, contaminants, and oxidative condition of new and in-service lubricating grease.  
1.2 This test method provides guidance on evaluating in-service grease samples, NLGI grades 00 to 3, for wear, consistency, contamination, and oxidation.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3.1 Exception—The exception to this will be where units of references were developed by the developers of the test equipment and necessary to report the results of the test.  
1.4 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.  
1.5 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.

  • Standard
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  • Standard
    9 pages
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ASTM
ASTM D7922-23(Test Method)
Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography

SIGNIFICANCE AND USE
5.1 Some glycol/antifreeze dilution of in-service engine oil is normal under typical operating conditions. However, excessive glycol dilution can lead to decreased performance, premature wear, or sudden engine failure. This test method provides a means of quantifying the level of glycol based antifreeze dilution, allowing the user to take necessary action.
SCOPE
1.1 This test method covers the determination of glycol based antifreeze for in-service engine oil by derivative headspace/gas chromatography.  
1.2 Sample is derivatized in-situ directly in a headspace sampling vial prior to vapor phase extraction and injection into a gas chromatograph.  
1.3 The chemistry of the derivatization is unique to the detection of the molecules of ethylene glycol and 1,2-propylene glycol. 1,3-propylene glycol could also be detected but is not used in any known anti-freeze at this time. Other coolant analyses are beyond the scope of this test method.  
1.4 The derivatization process does not affect glycol breakdown products such as glycolate and formate and hence the presence of these compounds in the oil will not be quantified.  
1.5 The test method concentration range is from 50 µg/g to 1000 µg/g. Lower levels are possible by method modifications. Higher levels are possible through sample dilution.  
1.6 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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.  
1.8 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.

  • Standard
    8 pages
    English language
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  • Standard
    8 pages
    English language
    sale 15% off