ASTM D8350-20
(Test Method)Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVB Spark-Ignition Engine
Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IVB Spark-Ignition Engine
SIGNIFICANCE AND USE
5.1 This test method was developed to evaluate automotive lubricant’s effect on controlling valve-train wear and overall engine wear for overhead camshaft engines with direct acting bucket lifters.
5.2 Average intake lifter volume loss is used as a measure of an oil’s ability to prevent valve-train wear.
5.3 End-of-test oil iron concentration is used as a measure of an oil’s ability to prevent overall engine wear.
Note 2: This test method may be used for engine oil specifications such as API SP, and ILSAC GF- 6A, and GF-6B.
SCOPE
1.1 This test method measures the ability of an engine crankcase oil to control valve-train wear in spark-ignition engines at low operating temperature conditions. This test method is designed to simulate extended engine cyclic vehicle operation. The Sequence IVB Test Method uses a Toyota 2NR-FE water cooled, 4 cycle, in-line cylinder, 1.5 L engine. The primary result is bucket lifter wear. Secondary results include cam lobe nose wear and measurement of iron (Fe) wear metal concentration in the used engine oil. Other determinations such as fuel dilution of the crankcase oil, non-ferrous wear metal concentrations, total fuel consumption, 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. Specific warning statements are provided throughout this document as necessary in each particular section.
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
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
Designation: D8350 − 20
Standard Test Method for
Evaluation of Automotive Engine Oils in the Sequence IVB
1
Spark-Ignition Engine
This standard is issued under the fixed designation D8350; 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.
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 – Annex A4).
TheTMC 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
servicesaspartoftheirtestregistrationprocess.Inaddition,theAmericanPetroleumInstituteandthe
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.ASTM
International policy is to encourage the development of test procedures based on generic equipment.
It is recognized that there are occasions where critical/sole-source equipment has been approved by
the technical committee (surveillance panel/task force) and is required by the test procedure. The
technical committee that oversees the test procedure is encouraged to clearly identify if the part is
considered critical in the test procedure.Ifapartisdeemedtobecritical,ASTMencouragesalternate
suppliers to be given the opportunity for consideration of supplying the critical part/component
providing they meet the approval process set forth by the technical committee.
Analternatesuppliercanstarttheprocessbyinitiatingcontactwiththetechnicalcommittee(current
chairs shown on ASTM TMC website). The supplier should advise on the details of the part that is
intended to be supplied. The technical committee will review the request and determine feasibility of
analternatesupplierfortherequestedreplacementcriticalpart.Intheeventthatareplacementcritical
parthasbeenidentifiedandprovenequivalentthesole-sourcesupplierfootnoteshallberemovedfrom
the test procedure.
1. Scope engines at low operating temperature conditions. This test
method is designed to simulate extended engine cyclic vehicle
1.1 This test method measures the ability of an engine
operation. The Sequence IVB Test Method uses a Toyota
crankcase oil to control valve-train wear in spark-ignition
2NR-FE water cooled, 4 cycle, in-line cylinder, 1.5L engine.
The primary result is bucket lifter wear. Secondary results
1
This test method is under the jurisdiction of ASTM Committee D02 on
includecamlobenosewearandmeasurementofiron(Fe)wear
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.B0 on Automotive Lubricants. metal concentration in the used engine oil. Other determina-
Current edition approved Sept. 1, 2020. Published December 2020. DOI:
tions such as fuel dilution of the crankcase oil, non-ferrous
10.1520/D8350-20
2 wearmetalconcentrations,totalfuelconsumption,andtotaloil
TheASTM Test Monitoring Center will update changes in this test method by
means of Information Letters. Information letters may be obtained from theASTM consumption,canbeusefulintheassessmentofthevalidityof
2
Test Monitoring Center (TMC), 6555 Penn Ave., Pittsburgh, PA 15206-4489,
the test results.
Attention: Administrator. www.astmtmc.cmu.edu.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8350 − 20
1.2 The values stated in SI units are to be regarded as ucts and Liquid Fuels (Mini Method)
standard. No other units of measurement are included in this D5453Test Method for Determination of Total Sulfur in
standard. Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel
1.2.1 Exceptions—Where there is no direct SI equivalent Engine Fuel, and Engine Oil by Ultravio
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.