ASTM D6709 - 14

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

    Active Standard ASTM D6709 | Developed by Subcommittee: D02.B0.01

    Book of Standards Volume: 05.03


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    Significance and Use

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

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

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

    5.4 Use—The 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:

    5.4.1 Specification D4485.

    5.4.2 API Publication 1509 Engine Oil Licensing and Certification System.6

    5.4.3 SAE Classification J304.

    1. Scope

    1.1 This 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.

    1.2 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

    13

    Precision and Bias

    14

     

    Precision

    14.1

     

    Bias

    14.2

    Use of ASTM Rounding

    15

    Keywords

    16

    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



    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D86 Test Method for Distillation of Petroleum Products at Atmospheric Pressure

    D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

    D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)

    D240 Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter

    D323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)

    D381 Test Method for Gum Content in Fuels by Jet Evaporation

    D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

    D525 Test Method for Oxidation Stability of Gasoline (Induction Period Method)

    D1319 Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption

    D2422 Classification of Industrial Fluid Lubricants by Viscosity System

    D2699 Test Method for Research Octane Number of Spark-Ignition Engine Fuel

    D2700 Test Method for Motor Octane Number of Spark-Ignition Engine Fuel

    D3231 Test Method for Phosphorus in Gasoline

    D3237 Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy

    D3343 Test Method for Estimation of Hydrogen Content of Aviation Fuels

    D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

    D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants

    D4294 Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry

    D4485 Specification for Performance of Active API Service Category Engine Oils

    D4815 Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography

    D7422 Test Method for Evaluation of Diesel Engine Oils in T-12 Exhaust Gas Recirculation Diesel Engine

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E191 Specification for Apparatus For Microdetermination of Carbon and Hydrogen in Organic and Organo-Metallic Compounds

    SAE Standards

    J183 Engine Oil Performance and Engine Service Classification (Other Than Energy-Conserving)

    J304 Engine Oil Tests


    ICS Code

    ICS Number Code 75.100 (Lubricants, industrial oils and related products)

    UNSPSC Code

    UNSPSC Code 15121501(Engine oil)


    DOI: 10.1520/D6709-14

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