Standard Historical Last Updated: Dec 31, 2010 Track Document
ASTM D6709-09

Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine)

Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine) D6709-09 ASTM|D6709-09|en-US Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine) Standard new BOS Vol. 05.03 Committee D02
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Significance and Use

This test method is used to evaluate automotive engine oils for protection of engines against bearing weight loss.

This test method is also used to evaluate the SIG capabilities of multiviscosity-graded oils.

Correlation of test results with those obtained in automotive service has not been established.

UseThe Sequence VIII test method is useful for engine oil specification acceptance. It is used in specifications and classifications of engine lubricating oils, such as the following:

Specification D4485.

API Publication 1509 Engine Oil Licensing and Certification System.

SAE Classification J304.

Scope

1.1 This test method covers the evaluation of automotive engine oils (SAE grades 5W, 10W, 20, 30, 40, and 50, and multiviscosity 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 multiviscosity-graded oils. Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D4485.

1.2 Correlation 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.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3.1 ExceptionsThe values stated in inch-pounds for certain tube measurements, screw thread specifications, and sole source supply equipment are to be regarded as standard.

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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are provided throughout this test method.

1.5 This test method is arranged as follows:

SubjectSection
Introduction
Scope1
Referenced Documents2
Terminology3
Summary of Test Method4
Before Test Starts4.1
Power Section Installation4.2
Engine Operation (Break-in)4.3
Engine Operation (Test/Samples)4.4
Stripped Viscosity4.5
Test Completion (BWL)4.6
Significance and Use5
Evaluation of Automotive oils5.1
Stay in Grade Capabilities5.2
Correlation of Results5.3
Use5.4
Apparatus6
Test Engineering, Inc.6.1
Fabricated or Specially Prepared Items6.2
Instruments and Controls6.3
Procurement of Parts6.4
Reagents and Materials7
Reagents7.1
Cleaning Materials7.2
Expendable Power Section-Related Items7.3
Power Section Coolant7.4
Reference Oils7.5
Test Fuel7.6
Test Oil Sample Requirements8
Selection8.1
Inspection8.2
Quantity8.3
Preparation of Apparatus9
Test Stand Preparation9.1
Conditioning Test Run on Power Section9.2
General Power Section Rebuild Instructions9.3
Reconditioning of Power Section After Each Test9.4
Calibration10
Power Section and Test Stand Calibration10.1
Instrumentation Calibration10.2
Calibration of AFR Measurement Equipment10.3
Calibration of Torque Wrenches10.4
Engine Operating Procedure11
Run-In and Flush11.1
Test Operating Conditions11.2
Air-Fuel Ratio and Spark Advance11.3
Air, Off-Gas and Blowby Measurement11.4
Unscheduled Shutdowns11.5
Oil Sampling and Oil Addition11.6
Periodic Measurements11.7
Final Oil Drain and Oil Consumption Computation11.8
Operational Validity Criteria11.9
Test Completion11.10
Determination of Test Results12
Oil Analysis12.1
Test Bearing Weight Loss Determination12.2
Report14
Precision and Bias15
Precision15.1
Bias15.2
Use of ASTM Rounding16
Keywords17
ANNEXES
Measurement of Connecting Rod Bearing Clearance and
Journal Taper
Annex A1
Measurement of Main Bearing ClearanceAnnex A2
The ASTM Test Monitoring Center Calibration ProgramAnnex A3
Measurement of Piston-to-Sleeve ClearanceAnnex A4
Control Chart Technique for a Laboratory's Severity
Adjustment (SA)
Annex A5
Recommended New Liner Honing ProcedureAnnex A6
Sequence VIII Oil Priming ProcedureAnnex A7
Alternative Crankcase Breather ConfigurationAnnex A8
Connecting Rod Bearing Cleaning ProcedureAnnex A9
Electronic Ignition ConversionAnnex A10
System Response ProcedureAnnex A11
Air-Fuel Ratio MeasurementAnnex A12
Lead Decontamination ProcedureAnnex A13
Stay-in-Grade Oil Analysis ProcedureAnnex A14
Crankshaft Rear Seal ConditioningAnnex A15
Report Forms and Data DictionaryAnnex A16
Test Fuel SpecificationAnnex A17
APPENDIXES
Role of the ASTM Test Monitoring Center and the Calibration ProgramAppendix X1
Suggested Method for Salvaging Camshaft Bearing JournalsAppendix X2
Data Log SheetsAppendix X3

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Details
Book of Standards Volume: 05.03
Developed by Subcommittee: D02.B0.01
Pages: 39
DOI: 10.1520/D6709-09
ICS Code: 75.100