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  • ASTM
    D6709-09 Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine)
    Edition: 2009
    $148.51
    Unlimited Users per year

Description of ASTM-D6709 2009

ASTM D6709-09

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




ASTM D6709

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

1.4 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:

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 14
Precision and Bias 15
Precision 15.1
Bias 15.2
Use of ASTM Rounding 16
Keywords 17
ANNEXES
Measurement of Connecting Rod Bearing Clearance and
Journal Taper
Annex A1
Measurement of Main Bearing Clearance Annex A2
The ASTM Test Monitoring Center Calibration Program Annex A3
Measurement of Piston-to-Sleeve Clearance Annex A4
Control Chart Technique for a Laboratory's Severity
Adjustment (SA)
Annex A5
Recommended New Liner Honing Procedure Annex A6
Sequence VIII Oil Priming Procedure Annex A7
Alternative Crankcase Breather Configuration Annex A8
Connecting Rod Bearing Cleaning Procedure Annex A9
Electronic Ignition Conversion Annex A10
System Response Procedure Annex A11
Air-Fuel Ratio Measurement Annex A12
Lead Decontamination Procedure Annex A13
Stay-in-Grade Oil Analysis Procedure Annex A14
Crankshaft Rear Seal Conditioning Annex A15
Report Forms and Data Dictionary Annex A16
Test Fuel Specification Annex A17
APPENDIXES
Role of the ASTM Test Monitoring Center and the Calibration Program Appendix X1
Suggested Method for Salvaging Camshaft Bearing Journals Appendix X2
Data Log Sheets Appendix X3

Keywords

bearing weight loss; CLR oil test engine; copper-lead bearings; engine oil; oil consumption; Sequence VIII test; shear stability; Automotive engine fuels/oils; Bearing weight loss; CLR (Cooperative Lubrication Research) test engine; Copper-lead bearings; Oil consumption; Sequence VIII test; Shear stability


ICS Code

ICS Number Code


DOI: 10.1520/D6709-09

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