Significance and Use
5.1 This test method is used to determine the ability of an engine crankcase oil to control wear that can develop in the field under low to moderate engine speeds and heavy engine torques. Side-by-side comparisons of two or more oils in delivery van fleets were used to demonstrate the field performance of various oils. The specific operating conditions of this test method were developed to provide correlation with the field performance of these oils.
5.2 This test method, along with other test methods, defines the minimum performance level of the Category API CG-4 for heavy duty diesel engine lubricants. Passing limits for this category are included in Specification D4485.
5.3 The design of the engine used in this test method is not representative of all modern diesel engines. Consider this factor, along with the specific operating conditions used to accelerate wear, when extrapolating test results.
1. Scope
1.1 This engine lubricant test method is commonly referred to as the Roller Follower Wear Test. Its primary result, roller follower shaft wear in the hydraulic valve lifter assembly, has been correlated with vehicles used in stop-and-go delivery service prior to 1993. It is one of the test methods required to evaluate lubricants intended to satisfy the API CG-4 performance category. This test has also been referred to as the 6.2 L Test.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Exceptions—Where there is no direct SI equivalent, such as pipe fittings, thermocouple diameters, and NPT screw threads. Also, roller follower wear is measured in mils.
1.3 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.
| | Section |
| Scope | 1 |
| Referenced Documents | 2 |
| Terminology | 3 |
| Summary of Test Method | 4 |
| Significance and Use | 5 |
| Reagents | 7 |
| Guidelines on Substitution | 7.1 |
| Apparatus | 6 |
| Preparation of Apparatus | 8 |
| New Engine Preparation | 8.1 |
| Installation of Auxiliary Systems and
Miscellaneous Components | 8.2 |
| Test Procedure | 9 |
| Description of Test Segments and Organization
of Test Procedure Sections | 9.1 |
| Engine Parts Replacement | 9.2 |
| Engine Starting Procedure | 9.3 |
| Normal Engine Shutdown Procedure | 9.4 |
| Emergency Shutdown Procedure | 9.5 |
| Unscheduled Shutdown and Downtime | 9.6 |
| New Engine Break-In | 9.7 |
| Pretest Procedure | 9.8 |
| Fifty-Hour Steady State Test | 9.9 |
| Periodic Measurements | 9.10 |
| Oil Sampling and Oil Addition Procedures | 9.11 |
| End of Test (EOT) Procedure | 9.12 |
| Calculation and Interpretation of Test Results | 10 |
| Environment of Parts Measurement Area | 10.1 |
| Roller Follower Shaft Wear Measurements | 10.2 |
| Oil Analysis | 10.3 |
| Assessment of Test Validity | 10.4 |
| Final Test Report | 11 |
| Reporting Calibration Test Results | 11.1 |
| Report Forms | 11.2 |
| Interim Non-Valid Calibration Test Summary | 11.3 |
| Severity Adjustments | 11.4 |
| Precision and Bias | 12 |
| Precision | 12.1 |
| Precision Estimate | 12.2 |
| Bias | 12.3 |
| Keywords | 13 |
| ANNEXES |
| Guidelines for Test Part Substitution or Modification | Annex A1 |
| Guidelines for Units and Specification Formats | Annex A2 |
| Detailed Specifications of Apparatus | Annex A3 |
| Calibration | Annex A4 |
| Final Report Forms | Annex A5 |
| Illustrations | Annex A6 |
| Kinematic Viscosity at 100°C Procedure for the
Roller Follower Wear Test | Annex A7 |
| Enhanced Thermal Gravimetric Analysis (TGA)
Procedure for Soot Measurement | Annex A8 |
| Sources of Materials and Information | Annex A9 |
| APPENDIXES |
| PC-9 Reference Diesel Fuel Properties | Appendix X1 |
| Diagnostic Data Review | Appendix X2 |
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
D93 Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
D97 Test Method for Pour Point of Petroleum Products
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)
D287 Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D446 Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers
D482 Test Method for Ash from Petroleum Products
D524 Test Method for Ramsbottom Carbon Residue of Petroleum Products
D613 Test Method for Cetane Number of Diesel Fuel Oil
D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration
D976 Test Method for Calculated Cetane Index of Distillate Fuels
D1319 Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption
D2274 Test Method for Oxidation Stability of Distillate Fuel Oil (Accelerated Method)
D2500 Test Method for Cloud Point of Petroleum Products
D2622 Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
D2709 Test Method for Water and Sediment in Middle Distillate Fuels by Centrifuge
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
D4485 Specification for Performance of Active API Service Category Engine Oils
D4737 Test Method for Calculated Cetane Index by Four Variable Equation
D5185 Test Method for Determination of Additive Elements, Wear Metals, and Contaminants in Used Lubricating Oils and Determination of Selected Elements in Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)
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
American National Standards Institute (ANSI)
MC96.1 Temperature Measurement Thermocouples
Keywords
calibrate; diesel engine; engine oil; light-duty; light-duty engine; lubricant; reference oil; roller follower shaft wear; used oil wear;
ICS Code
ICS Number Code 19.020 (Test conditions and procedures in general); 75.100 (Lubricants, industrial oils and related products)
DOI: 10.1520/D5966-13
ASTM International is a member of CrossRef.
Citing ASTM Standards
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