ASTM D 6709 : 2022
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine)
Hardcopy , PDF
03-27-2024
English
04-13-2022
Committee |
D 02
|
DocumentType |
Test Method
|
Pages |
39
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1This test method covers the evaluation of automotive engine oils (SAE grades 0W, 5W, 10W, 20, 30, 40, and 50, and multi-viscosity grades) intended for use in spark-ignition gasoline engines. The test procedure is conducted using a carbureted, spark-ignition Cooperative Lubrication Research (CLR) Oil Test Engine (also referred to as the Sequence VIII test engine in this test method) run on unleaded fuel. An oil is evaluated for its ability to protect the engine and the oil from deterioration under high-temperature and severe service conditions. The test method can also be used to evaluate the viscosity stability of multi-viscosity-graded oils. Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D4485.
1.2Correlation of test results with those obtained in automotive service has not been established. Furthermore, the results obtained in this test are not necessarily indicative of results that will be obtained in a full-scale automotive spark-ignition or compression-ignition engine, or in an engine operated under conditions different from those of the test. The test can be used to compare one oil with another.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1Exceptions—The values stated in inch-pounds for certain tube measurements, screw thread specifications, and sole source supply equipment are to be regarded as standard.
1.3.1.1The bearing wear in the text is measured in grams and described as weight loss, a non-SI term.
1.4This test method is arranged as follows:
Subject | Section | ||
Introduction | |||
Scope | 1 | ||
Referenced Documents | 2 | ||
Terminology | 3 | ||
Summary of Test Method | 4 | ||
Before Test Starts | 4.1 | ||
Power Section Installation | 4.2 | ||
Engine Operation (Break-in) | 4.3 | ||
Engine Operation (Test/Samples) | 4.4 | ||
Stripped Viscosity | 4.5 | ||
Test Completion (BWL) | 4.6 | ||
Significance and Use | 5 | ||
Evaluation of Automotive oils | 5.1 | ||
Stay in Grade Capabilities | 5.2 | ||
Correlation of Results | 5.3 | ||
Use | 5.4 | ||
Apparatus | 6 | ||
Test Engineering, Inc. | 6.1 | ||
Fabricated or Specially Prepared Items | 6.2 | ||
Instruments and Controls | 6.3 | ||
Procurement of Parts | 6.4 | ||
Reagents and Materials | 7 | ||
Reagents | 7.1 | ||
Cleaning Materials | 7.2 | ||
Expendable Power Section-Related Items | 7.3 | ||
Power Section Coolant | 7.4 | ||
Reference Oils | 7.5 | ||
Test Fuel | 7.6 | ||
Test Oil Sample Requirements | 8 | ||
Selection | 8.1 | ||
Inspection | 8.2 | ||
Quantity | 8.3 | ||
Preparation of Apparatus | 9 | ||
Test Stand Preparation | 9.1 | ||
Conditioning Test Run on Power Section | 9.2 | ||
General Power Section Rebuild Instructions | 9.3 | ||
Reconditioning of Power Section After Each Test | 9.4 | ||
Calibration | 10 | ||
Power Section and Test Stand Calibration | 10.1 | ||
Instrumentation Calibration | 10.2 | ||
Calibration of AFR Measurement Equipment | 10.3 | ||
Calibration of Torque Wrenches | 10.4 | ||
Engine Operating Procedure | 11 | ||
Run-In and Flush | 11.1 | ||
Test Operating Conditions | 11.2 | ||
Air-Fuel Ratio and Spark Advance | 11.3 | ||
Air, Off-Gas and Blowby Measurement | 11.4 | ||
Unscheduled Shutdowns | 11.5 | ||
Oil Sampling and Oil Addition | 11.6 | ||
Periodic Measurements | 11.7 | ||
Final Oil Drain and Oil Consumption Computation | 11.8 | ||
Operational Validity Criteria | 11.9 | ||
Test Completion | 11.10 | ||
Determination of Test Results | 12 | ||
Oil Analysis | 12.1 | ||
Test Bearing Weight Loss Determination | 12.2 | ||
Report | 13 | ||
Precision and Bias | 14 | ||
Precision | 14.1 | ||
Bias | 14.2 | ||
Use of ASTM Rounding | 15 | ||
Keywords | 16 | ||
ANNEXES | |||
ASTM Test Monitoring Center Organization | Annex A1 | ||
ASTM Test Monitoring Center: Calibration Procedures | Annex A2 | ||
ASTM Test Monitoring Center: Maintenance Activities | Annex A3 | ||
ASTM Test Monitoring Center: Related Information | Annex A4 | ||
Measurement of Connecting Rod Bearing Clearance and | Annex A5 | ||
Measurement of Main Bearing Clearance | Annex A6 | ||
Measurement of Piston-to-Sleeve Clearance | Annex A7 | ||
Control Chart Technique for a Laboratory's Severity | Annex A8 | ||
Recommended New Liner Honing Procedure | Annex A9 | ||
Sequence VIII Oil Priming Procedure | Annex A10 | ||
Alternative Crankcase Breather Configuration | Annex A11 | ||
Connecting Rod Bearing Cleaning Procedure | Annex A12 | ||
Electronic Ignition Conversion | Annex A13 | ||
System Response Procedure | Annex A14 | ||
Air-Fuel Ratio Measurement | Annex A15 | ||
Lead Decontamination Procedure | Annex A16 | ||
Crankshaft Rear Seal Conditioning | Annex A17 | ||
Report Forms and Data Dictionary | Annex A18 | ||
Stay-in-Grade Oil Analysis Procedure | Annex A19 | ||
APPENDIXES | |||
Suggested Method for Salvaging Camshaft Bearing Journals | Appendix X1 | ||
Data Log Sheets | Appendix X2 |
1.5This 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 precautionary statements are provided throughout this test method.
1.6This 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.
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