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ASTM D6794-02(2007)

(Test Method)

Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating Time

Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating Time

SIGNIFICANCE AND USE
It is normal for some of the combustion products of an internal combustion engine to penetrate into the engine lubricant and be retained in it.
When an engine is run for a period of time and then stored over a long period of time, the by-products of combustion may be retained in the oil in a liquefied state.
Under these circumstances, precipitates can form that impair the filterability of the oil the next time the engine is run.
This test method subjects the test oil and the new oil to the same treatments such that the loss of filterability can be determined.
Reference oils, on which the data obtained by this test method is known, are available.
This test method requires that a reference oil also be tested and results reported. Two oils are available, one known to give a low and one known to give a high data value for this test method.
Note 1—When the new oil test results are to be offered as candidate oil test results for a specification, such as Specification D 4485, the specification will state maximum allowable loss of filterability (flow reduction) of the test oil as compared to the new oil.
SCOPE
1.1 This test method covers the determination of the tendency of an oil to form a precipitate that can plug an oil filter. It simulates a problem that may be encountered in a new engine run for a short period of time, followed by a long period of storage with some water in the oil.
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-Apr-2007
ICS
75.100 - Lubricants, industrial oils and related products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.B0 - Automotive Lubricants
Current Stage
Ref Project

Relations

Replaces
ASTM D6794-02 - Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating Time
Effective Date
01-May-2007
Replaced By
ASTM D6794-08 - Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating Time
Effective Date
01-Dec-2008
Referred By
ASTM D4485-22e1 - Standard Specification for Performance of Active API Service Category Engine Oils
Effective Date
01-May-2007

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ASTM D6794-02(2007) - Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating TimeASTM D6794-02(2007) - Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating Time
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ASTM D6794-02(2007) - Standard Test Method for Measuring the Effect on Filterability of Engine Oils After Treatment with Various Amounts of Water and a Long (6-h) Heating Time
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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:D6794–02 (Reapproved 2007)
Standard Test Method for
Measuring the Effect on Filterability of Engine Oils After
Treatment with Various Amounts of Water and a Long (6-h)
1
Heating Time
This standard is issued under the fixed designation D 6794; 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.
INTRODUCTION
Any properly equipped laboratory, without outside assistance, can use the procedure described in
2
this test method. However, theASTM Test Monitoring Center (TMC) provides reference oils and an
assessmentofthetestresultsobtainedonthoseoilsbythelaboratory(seeAnnexA1).Bythesemeans,
the laboratory will know whether their use of the test method gives results statistically similar to those
obtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratoryutilizetheTMC
services in seeking qualification of oils against specifications. For example, the U.S. Army imposes
such a requirement in connection with several Army engine lubricating oil specifications.
Accordingly, this test method is written for use by laboratories that utilize the TMC services.
Laboratories that choose not to use those services may simply ignore those portions of the test method
that refer to the TMC.
This test method may be modified by means of information letters issued by the TMC. In addition,
the TMC may issue supplementary memoranda related to the test method (see Annex A1).
3
For other information, refer to the research report of this test method.
1. Scope 2. Referenced Documents
4
1.1 This test method covers the determination of the ten- 2.1 ASTM Standards:
dency of an oil to form a precipitate that can plug an oil filter. D 1193 Specification for Reagent Water
Itsimulatesaproblemthatmaybeencounteredinanewengine D 4057 Practice for Manual Sampling of Petroleum and
run for a short period of time, followed by a long period of Petroleum Products
storage with some water in the oil. D 4485 Specification for Performance of Engine Oils
1.2 This standard does not purport to address all of the D 5844 Test Method for Evaluation of Automotive Engine
5
safety concerns, if any, associated with its use. It is the Oils for Inhibition of Rusting (Sequence IID)
responsibility of the user of this standard to establish appro- D 5862 Test Method for Evaluation of Engine Oils in
priate safety and health practices and determine the applica- Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel
bility of regulatory limitations prior to use. Engine
E 344 Terminology Relating to Thermometry and Hydrom-
etry
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
3. Terminology
D02.B0 on Automotive Lubricants.
3.1 Definitions:
Current edition approved May 1, 2007. Published June 2007. Originally
approved in 2002. Last previous edition approved in 2002 as D 6794 – 02.
2
ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 152006-4489.
4
This test method is supplemented by Information Letters and Memoranda issued by For referenced ASTM standards, visit the ASTM website, www.astm.org, or
theASTM Test Monitoring Center. Users of this test method can contact theASTM contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Test Monitoring Center to obtain the most recent of these. Standards volume information, refer to the standard’s Document Summary page on
3
Supporting data have been filed at ASTM International Headquarters and may the ASTM website.
5
be obtained by requesting Research Report RR: D02–1492. Withdrawn.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6794–02 (2007)
3.1.1 calibrate, v—to determine the indication or output of 5.6 This test method requires that a reference oil also be
a measuring device with respect to that of a standard. E 344 tested and results reported. Two oils are available, one known
3.1.2 calibration test, n—a test, using a coded oil, con- to give a low and one known to give a high data value for this
ducted as specified in the test method. test method.
3.1.2.1 Discussion—The test result is used to determine the
NOTE 1—Whenthenewoiltestresultsaretobeofferedascandidateoil
suitability of the testing facility/laboratory to conduct such
test results for a specification, such as Specification D 4485, the specifi-
tests on non-reference oils.
cation will state maximum allowable loss of filterability (flow reduction)
3.1.3 candidate oil, n—an oil t
...

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5.1 The low-temperature, low-shear-rate viscosity of automatic transmission fluids, gear oils, torque and tractor fluids, and industrial and automotive hydraulic oils (see Appendix X4) are of considerable importance to the proper operation of many mechanical devices. Measurement of the viscometric properties of these oils and fluids at low temperatures is often used to specify their acceptance for service. This test method is used in a number of specifications.  
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1.4.2 The viscosity data used for Procedure D precision study was from 6400 mPa·s to 256 000 mPa·s at test temperatures of –26 °C and –40 °C.  
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1.3 Spectra and distribution profiles presented herein are for illustrative purposes only and are not to be construed as representing or establishing lubricant or machinery guidelines.  
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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