ASTM D6984-07a
(Test Method)Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine
Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine
SIGNIFICANCE AND USE
This test method was developed to evaluate automotive engine oils for protection against oil thickening and engine wear during moderately high-speed, high-temperature service.
The increase in oil viscosity obtained in this test method indicates the tendency of an oil to thicken because of oxidation. In automotive service, such thickening can cause oil pump starvation and resultant catastrophic engine failures.
The deposit ratings for an oil indicate the tendency for the formation of deposits throughout the engine, including those that can cause sticking of the piston rings in their grooves. This can be involved in the loss of compression pressures in the engine.
The camshaft and lifter wear values obtained in this test method provide a measure of the anti-wear quality of an oil under conditions of high unit pressure mechanical contact.
The test method was developed to correlate with oils of known good and poor protection against oil thickening and engine wear. Specially formulated oils that produce less than desirable results with unleaded fuels were also used during the development of this test method.
The Sequence IIIF engine oil test has replaced the Sequence IIIE test and can be used in specifications and classifications of engine lubricating oils, such as:
Specification D 4485,
Military Specification MIL-PRF-2104, and
SAE Classification J183.
SCOPE
1.1 This test method covers an engine test procedure for evaluating automotive engine oils for certain high-temperature performance characteristics, including oil thickening, varnish deposition, oil consumption, as well as engine wear. Such oils include both single viscosity grade and multiviscosity grade oils that are used in both spark-ignition, gasoline-fueled engines, as well as in diesel engines.
Note 1—Companion test methods used to evaluate engine oil performance for specification requirements are discussed in SAE J304.
1.2 The values stated in SI or other units are to be regarded as the standard. The values given in parentheses are provided for information only.
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 requirements prior to use.
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An American National Standard
Designation: D 6984 – 07a
Standard Test Method for
Evaluation of Automotive Engine Oils in the Sequence IIIF,
1
Spark-Ignition Engine
This standard is issued under the fixed designation D 6984; 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
This test method described can be used by any properly equipped laboratory; it does not require the
2
assistance of anyone outside that laboratory. However, the ASTM Test Monitoring Center (TMC)
provides reference oils and an assessment of the test results obtained on those oils by the laboratory
(seeAnnexA1). By these means, the laboratory will know whether their use of the test method gives
results statistically similar to those obtained by other laboratories. Furthermore, various agencies
requirethatalaboratoryutilizetheTMCservicesinseekingqualificationofoilsagainstspecifications.
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 theTMC. In addition,
the TMC may issue supplementary memoranda related to the test method (see A1.8).
1. Scope priate safety and health practices and determine the applica-
bility of regulatory requirements prior to use.
1.1 This test method covers an engine test procedure for
1.4 This test method is arranged as follows:
evaluating automotive engine oils for certain high-temperature
Subject Section
performance characteristics, including oil thickening, varnish
Scope 1
deposition, oil consumption, as well as engine wear. Such oils
Referenced Documents 2
include both single viscosity grade and multiviscosity grade
Terminology 3
Summary of Test Method 4
oils that are used in both spark-ignition, gasoline-fueled
Significance and Use 5
engines, as well as in diesel engines.
Apparatus 6
Laboratory 6.1
NOTE 1—Companion test methods used to evaluate engine oil perfor-
Drawings 6.2
mance for specification requirements are discussed in SAE J304.
Specified Equipment 6.3
Test Engine 6.4
1.2 The values stated in SI or other units are to be regarded
Engine Parts 6.4.1
as the standard. The values given in parentheses are provided
Engine Speed and Load Control 6.5
Sequence IIIF Fluid Conditioning Module 6.6
for information only.
Engine Cooling System 6.6.1
1.3 This standard does not purport to address all of the
Flushing Tank 6.7
safety concerns, if any, associated with its use. It is the
Coolant Mixing Tank 6.8
Condenser Cooling Systems 6.9
responsibility of the user of this standard to establish appro-
Engine Oil-Cooling System 6.10
Fuel System 6.11
Induction Air Supply Humidity, Temperature, and Pressure 6.12
1
This test method is under the jurisdiction of ASTM Committee D02 on
Temperature Measurement 6.13
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
Thermocouple Location 6.13.1
D02.B0.01 on Passenger Car Engine Oils. Air-to-Fuel Ratio Determination 6.14
Current edition approved Nov. 1, 2007. Published January 2008. Originally Injector Flow Testing 6.14.1
Exhaust and Exhaust Back Pressure Systems 6.15
approved in 2003. Last previous edition approved in 2007 as D 6984–07.
2
Blowby Flow Rate Measurement 6.16
Until the next revision of this test method, the ASTM Test Monitoring Center
Pressure Measurement and Sensor Location 6.17
will update changes in the test method by means of information letters. Information
Reagents and Materials 7
lettersmaybeobtainedfromtheASTMTestMonitoringCenter,6555PennAvenue,
Test Fuel 7.1
Pittsburgh, PA 15206-4489. Attention: Administrator. www.astmtmc.cmu.edu. This
Engine and Condenser Coolant 7.2
edition incorporates revisions contained in all information letters through 07-1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D 6984 – 07a
Subject Section Subject Section
Coolant Additive 7.3 Temperature 10.8.3
Coolant Preparation 7.4 Pressure 10.8.4
Pre-Test Cleaning Materials 7.5 Flow 10.8.5
Sealing and Anti-seize Compounds 7.6 Speed 10.8.6
Test Oil Sample Requirements 8 Load 10.8.7
Preparation of Apparatus 9 Measurement Resolution 10.8.8
Condenser Cleaning 9.1 System Time Response 10.8.9
Intake Manifold Cleaning 9.3 Quality Index 10.8.10
Cleaning of Engin
...
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.
An American National Standard
Designation:D6984–07 Designation: D 6984 – 07a
Standard Test Method for
Evaluation of Automotive Engine Oils in the Sequence IIIF,
1
Spark-Ignition Engine
This standard is issued under the fixed designation D 6984; 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
This test method described can be used by any properly equipped laboratory; it does not require the
2
assistance of anyone outside that laboratory. However, the ASTM Test Monitoring Center (TMC)
provides reference oils and an assessment of the test results obtained on those oils by the laboratory
(seeAnnexA1). By these means, the laboratory will know whether their use of the test method gives
results statistically similar to those obtained by other laboratories. Furthermore, various agencies
requirethatalaboratoryutilizetheTMCservicesinseekingqualificationofoilsagainstspecifications.
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 theTMC. In addition,
the TMC may issue supplementary memoranda related to the test method (see A1.8).
1. Scope
1.1 This test method covers an engine test procedure for evaluating automotive engine oils for certain high-temperature
performance characteristics, including oil thickening, varnish deposition, oil consumption, as well as engine wear. Such oils
include both single viscosity grade and multiviscosity grade oils that are used in both spark-ignition, gasoline-fueled engines, as
well as in diesel engines.
NOTE 1—Companion test methods used to evaluate engine oil performance for specification requirements are discussed in SAE J304.
1.2 The values stated in SI or other units are to be regarded as the standard. The values given in parentheses are provided for
information only.
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
requirements prior to use.
1.4 This test method is arranged as follows:
Subject Section
Scope 1
Referenced Documents 2
Terminology 3
Summary of Test Method 4
Significance and Use 5
Apparatus 6
Laboratory 6.1
Drawings 6.2
Specified Equipment 6.3
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.B0.01
on Passenger Car Engine Oils.
Current edition approved MayNov. 1, 2007. Published May 2007.January 2008. Originally approved in 2003. Last previous edition approved in 20062007 as
D6984–06a.D 6984–07.
2
Until the next revision of this test method, theASTM Test Monitoring Center will update changes in the test method by means of information letters. Information letters
may be obtained from the ASTM Test Monitoring Center, 6555 Penn Avenue, Pittsburgh, PA 15206-4489. Attention: Administrator. www.astmtmc.cmu.edu. This edition
incorporates revisions contained in all information letters through 06–3.07-1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D 6984 – 07a
Subject Section
Test Engine 6.4
Engine Parts 6.4.1
Engine Speed and Load Control 6.5
Sequence IIIF Fluid Conditioning Module 6.6
Engine Cooling System 6.6.1
Flushing Tank 6.7
Coolant Mixing Tank 6.8
Condenser Cooling Systems 6.9
Engine Oil-Cooling System 6.10
Fuel System 6.11
Induction Air Supply Humidity, Temperature, and Pressure 6.12
Temperature Measurement 6.13
Thermocouple Location 6.13.1
Air-to-Fuel Ratio Determination 6.14
Injector Flow Testing 6.14.1
Exhaust and Exhaust Back Pressure Systems 6.15
Blowby Flow Rate Measurement 6.16
Pressure Measurement and Sensor Location 6.17
Reagents and Materials 7
Test Fuel 7.1
Engine and Condenser Coolant 7.2
Coolant Additive 7.3
Coolant Preparation 7.4
Pre-Test Cleaning Materials 7.5
...
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