ASTM D6891-23
(Test Method)Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVA Spark-Ignition Engine
Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVA Spark-Ignition Engine
SIGNIFICANCE AND USE
5.1 This test method was developed to evaluate automotive lubricant’s effect on controlling cam lobe wear for overhead valve-train equipped engines with sliding cam followers.
Note 1: This test method may be used for engine oil specifications, such as Specification D4485, API 1509, SAE J183, and ILSC GF 3.
SCOPE
1.1 This test method measures the ability of crankcase oil to control camshaft lobe wear for spark-ignition engines equipped with an overhead valve-train and sliding cam followers. This test method is designed to simulate extended engine idling vehicle operation. The Sequence IVA Test Method uses a Nissan KA24E engine. The primary result is camshaft lobe wear (measured at seven locations around each of the twelve lobes). Secondary results include cam lobe nose wear and measurement of iron wear metal concentration in the used engine oil. Other determinations such as fuel dilution of crankcase oil, non-ferrous wear metal concentrations, and total oil consumption, can be useful in the assessment of the validity of the test results.2
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 Exceptions—Where there is no direct SI equivalent such as pipe fittings, tubing, NPT screw threads/diameters, or single source equipment specified.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Annex A8 for specific safety precautions.
1.4 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.
General Information
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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.
Designation: D6891 − 23
Standard Test Method for
Evaluation of Automotive Engine Oils in the Sequence IVA
1
Spark-Ignition Engine
This standard is issued under the fixed designation D6891; 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.
INTRODUCTION
Portions of this test method are written for use by laboratories that make use of ASTM Test
2
Monitoring Center (TMC) services (see Annex A1).
The TMC provides reference oils, and engineering and statistical services to laboratories that desire
to produce test results that are statistically similar to those produced by laboratories previously
calibrated by the TMC.
In general, the Test Purchaser decides if a calibrated test stand is to be used. Organizations such as
the American Chemistry Council require that a laboratory utilize the TMC services as part of their test
registration process. In addition, the American Petroleum Institute and the Gear Lubricant Review
Committee of the Lubricant Review Institute (SAE International) require that a laboratory use the
TMC services in seeking qualification of oils against their specifications.
The advantage of using the TMC services to calibrate test stands is that the test laboratory (and
hence the Test Purchaser) has an assurance that the test stand was operating at the proper level of test
severity. It should also be borne in mind that results obtained in a non-calibrated test stand may not
be the same as those obtained in a test stand participating in the ASTM TMC services process.
Laboratories that choose not to use the TMC services may simply disregard these portions.
1. Scope* crankcase oil, non-ferrous wear metal concentrations, and total
oil consumption, can be useful in the assessment of the validity
1.1 This test method measures the ability of crankcase oil to
2
of the test results.
control camshaft lobe wear for spark-ignition engines equipped
with an overhead valve-train and sliding cam followers. This 1.2 The values stated in SI units are to be regarded as
test method is designed to simulate extended engine idling standard. No other units of measurement are included in this
vehicle operation. The Sequence IVA Test Method uses a standard.
Nissan KA24E engine. The primary result is camshaft lobe 1.2.1 Exceptions—Where there is no direct SI equivalent
wear (measured at seven locations around each of the twelve such as pipe fittings, tubing, NPT screw threads/diameters, or
lobes). Secondary results include cam lobe nose wear and single source equipment specified.
measurement of iron wear metal concentration in the used
1.3 This standard does not purport to address all of the
engine oil. Other determinations such as fuel dilution of
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
1 priate safety, health, and environmental practices and deter-
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
mine the applicability of regulatory limitations prior to use.
Subcommittee D02.B0 on Automotive Lubricants.
See Annex A8 for specific safety precautions.
Current edition approved July 1, 2023. Published July 2023. Originally approved
ɛ1 1.4 This international standard was developed in accor-
in 2003. Last previous edition approved in 2021 as D6891 – 21 . DOI: 10.1520/
dance with internationally recognized principles on standard-
D6891-23.
2
The ASTM Test Monitoring Center will update changes in this test method by
ization established in the Decision on Principles for the
means of Information Letters. Information letters may be obtained from the ASTM
Development of International Standards, Guides and Recom-
Test Monitoring Center (TMC), 203 Armstrong Drive, Freeport, PA 16229,
mendations issued by the World Trade Organization Technical
Attention: Director. www.astmtmc.org. This edition incorporates all Information
Letters through No. 23–1. Barriers to Trade (TBT) Committee.
*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 ----------------------
D6891 − 23
2. Referenced Documents 2.6 CEC Standard:
3 CEC-L-38-A-94 Peugeot TU-3M/KDX Valve-train Scuffing
2.1 ASTM Standards:
9
Wear Test
D235 Specification for Mineral Spirits (Petr
...
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.
´1
Designation: D6891 − 21 D6891 − 23
Standard Test Method for
Evaluation of Automotive Engine Oils in the Sequence IVA
1
Spark-Ignition Engine
This standard is issued under the fixed designation D6891; 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
ε NOTE—Editorially updated TMC governance information in June 2022.
INTRODUCTION
Portions of this test method are written for use by laboratories that make use of ASTM Test
2
Monitoring Center (TMC) services (see Annex A1).
The TMC provides reference oils, and engineering and statistical services to laboratories that desire
to produce test results that are statistically similar to those produced by laboratories previously
calibrated by the TMC.
In general, the Test Purchaser decides if a calibrated test stand is to be used. Organizations such as
the American Chemistry Council require that a laboratory utilize the TMC services as part of their test
registration process. In addition, the American Petroleum Institute and the Gear Lubricant Review
Committee of the Lubricant Review Institute (SAE International) require that a laboratory use the
TMC services in seeking qualification of oils against their specifications.
The advantage of using the TMC services to calibrate test stands is that the test laboratory (and
hence the Test Purchaser) has an assurance that the test stand was operating at the proper level of test
severity. It should also be borne in mind that results obtained in a non-calibrated test stand may not
be the same as those obtained in a test stand participating in the ASTM TMC services process.
Laboratories that choose not to use the TMC services may simply disregard these portions.
1. Scope*
1.1 This test method measures the ability of crankcase oil to control camshaft lobe wear for spark-ignition engines equipped with
an overhead valve-train and sliding cam followers. This test method is designed to simulate extended engine idling vehicle
operation. The Sequence IVA Test Method uses a Nissan KA24E engine. The primary result is camshaft lobe wear (measured at
seven locations around each of the twelve lobes). Secondary results include cam lobe nose wear and measurement of iron wear
metal concentration in the used engine oil. Other determinations such as fuel dilution of crankcase oil, non-ferrous wear metal
2
concentrations, and total oil consumption, can be useful in the assessment of the validity of the test results.
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
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.B0 on Automotive Lubricants.
Current edition approved April 1, 2021July 1, 2023. Published April 2021July 2023. Originally approved in 2003. Last previous edition approved in 20152021 as
ɛ1
D6891 – 15.D6891 – 21 . DOI: 10.1520/D6891-21E01.10.1520/D6891-23.
2
The ASTM Test Monitoring Center will update changes in this test method by means of Information Letters. Information letters may be obtained from the ASTM Test
Monitoring Center (TMC), 203 Armstrong Drive, Freeport, PA 16229, Attention: Director. www.astmtmc.org. This edition incorporates all Information Letters through No.
20–1.23–1.
*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 ----------------------
D6891 − 23
1.2.1 Exceptions—Where there is no direct SI equivalent such as pipe fittings, tubing, NPT screw threads/diameters, or single
source equipment specified.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. See Annex A8 for specific safety precautions.
1.4 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 Recommendation
...
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