• ASTM D 6709 : 2021 : REV A

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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

    Available format(s):  Hardcopy, PDF

    Superseded date:  12-01-2024

    Language(s):  English

    Published date:  05-11-2021

    Publisher:  American Society for Testing and Materials

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    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
    Journal Taper

    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
    Adjustment (SA)

    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

    Test Fuel Specification

    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.

    General Product Information - (Show below) - (Hide below)

    Committee D 02
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM D 6022 : 2019 Standard Practice for Calculation of Permanent Shear Stability Index
    ASTM D 4485 : 2020 Standard Specification for Performance of Active API Service Category Engine Oils

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM D 4815 : 2015 : REV B : R2019 Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography
    ASTM D 4815 : 2022 Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography
    ASTM D 235 : 2022 Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
    ASTM D 2700 : 2022 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
    ASTM D 2700 : 2021 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
    ASTM D 235 : 2002 : R2012 Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent) (Withdrawn 2021)
    ASTM D 4294 : 2021 Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry
    ASTM D 2699 : 2021 Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel
    ASTM D 445 : 2021 : EDT 1 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
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