Standard Test Method for Evaluation of Engine Oils for Roller Follower Wear in Light-Duty Diesel Engine

SIGNIFICANCE AND USE
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 loads. Side-by-side comparisons of two or more oils in delivery van fleets were used to demonstrate the field performance of various oils.3 The specific operating conditions of this test method were developed to provide correlation with the field performance of these oils.
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 D 4485.
The design of the engine used in this test method is not representative of all modern diesel engines. This factor, along with the specific operating conditions used to accelerate wear, shall be considered when extrapolating test results.
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 of units used in this test method are stated in either inch-pound units or SI units and are to be regarded separately as the standard.
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.
1.3 Table of Contents: SectionScope1Referenced Documents2Terminology3Summary of Test Method4Significance and Use5Reagents7Guidelines on Substitution7.1Apparatus6Preparation of Apparatus8New Engine Preparation8.1Installation of Auxiliary Systems8.2Test Procedure9Description of Test Segments and Organization9.1Engine Parts Replacement9.2Engine Starting Procedure9.3Normal Engine Shutdown Procedure9.4Emergency Shutdown Procedure9.5Unscheduled Shutdown and Downtime9.6New Engine Break-In9.7Pretest Procedure9.8Fifty-Hour Steady State Test9.9Periodic Measurements9.10Oil Sampling and Oil Addition Procedures9.11End of Test Procedure9.12Calculation and Interpretation of Test Results10Environment of Parts Measurement Area10.1Roller Follower Shaft Wear Measurements10.2Oil Analysis10.3Assessment of Test Validity10.4Final Test Report11Reporting Calibration Test Results11.1Report Forms11.2Interim Non-Valid Calibration Test Summary11.3Severity Adjustments11.4Precision and Bias12Reference Oil Precision12.1Bias12.3Keywords13ANNEXESGuidelines for Test Part Substitution or ModificationsA1Guidelines for Units and Specification FormatsA2Detailed Specifications of ApparatusA3CalibrationA4Final Report FormsA5IllustrationsA6Kinematic Viscosity @ 100C Procedure for Test SamplesA7Enhanced Gravimetric Analysis TGA ProcedureA8Sources of Materials and InformationA9Roller Follower Wear Test (RFWT) Data DictionaryA10APPENDIXESRanges for Howell LSRD-4 Reference FuelX1Diagnostic Data ReviewX2

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Publication Date
09-Nov-2002
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ASTM D5966-02 - Standard Test Method for Evaluation of Engine Oils for Roller Follower Wear in Light-Duty Diesel Engine
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: D 5966 – 02
Standard Test Method for
Evaluation of Engine Oils for Roller Follower Wear in Light-
1
Duty Diesel Engine
This standard is issued under the fixed designation D5966; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This test method is continually undergoing changes to reflect refinements in procedure, obsoles-
cenceofpartsorreagents.Thesechangesorupdates,aswellasgeneralinformationregardingthetest
method, are issued as information letters by the ASTM Test Monitoring Center (TMC). Copies of
information letters pertaining to the test method may be obtained by contacting the ASTM Test
2
Monitoring Center.
The test method can be used by any properly equipped laboratory, without assistance of anyone not
associated with that laboratory. However, TMC provides reference oils and an assessment of the test
resultsobtainedonthoseoilsbythelaboratory.Bythismeans,thelaboratorywillknowwhethertheir
use of the test method gives results statistically similar to those obtained by other laboratories.
Furthermore, various agencies require that a laboratory utilize the TMC services in seeking
qualification of oils against specifications. For example, the U.S.Army imposes such a requirement,
in connection with several military lubricant specifications.
Accordingly, this test method is written for use by laboratories which utilize the TMC services.
Laboratories that choose not to use these services may simply ignore those portions of the test
procedure which refer to the TMC.
1. Scope priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This engine lubricant test method is commonly referred
1.4 Table of Contents:
to as the Roller Follower Wear Test. Its primary result, roller
Section
follower shaft wear in the hydraulic valve lifter assembly, has
Scope 1
been correlated with vehicles used in stop-and-go delivery
Referenced Documents 2
3
service prior to 1993. It is one of the test methods required to
Terminology 3
Summary of Test Method 4
evaluate lubricants intended to satisfy the API CG-4 perfor-
Significance and Use 5
mance category.This test has also been referred to as the 6.2 L
Reagents 7
Test. Guidelines on Substitution 7.1
Apparatus 6
1.2 The values of units used in this test method are stated in
Preparation of Apparatus 8
either inch-pound units or SI units and are to be regarded
New Engine Preparation 8.1
separately as the standard. Installation of Auxiliary Systems 8.2
Test Procedure 9
1.3 This standard does not purport to address all of the
Description of Test Segments and Organization 9.1
safety concerns, if any, associated with its use. It is the
Engine Parts Replacement 9.2
responsibility of the user of this standard to establish appro-
Engine Starting Procedure 9.3
Normal Engine Shutdown Procedure 9.4
Emergency Shutdown Procedure 9.5
Unscheduled Shutdown and Downtime 9.6
1
This test method is under the jurisdiction of ASTM Committee D02 on
New Engine Break-In 9.7
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
Pretest Procedure 9.8
D02.B0 on Automotive Lubricants.
Fifty-Hour Steady State Test 9.9
Current edition approved Nov. 10, 2002. Published February 2003. Originally
Periodic Measurements 9.10
approved in 1996. Last previous edition approved in 1999 as D5966–99.
Oil Sampling and Oil Addition Procedures 9.11
2
ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 15206-4489.
End of Test Procedure 9.12
This edition incorporated revisions contained in all Information Letters through No.
Calculation and Interpretation of Test Results 10
01-1.
Environment of Parts Measurement Area 10.1
3
Supporting data have been filed atASTM International Headquarters and may Roller Follower Shaft Wear Measurements 10.2
be obtained by requesting Research Report RR: D02-1218.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D5966–02
D4737 Test Method for Calculated Cetane Index by Four
Oil Analysis 10.3
7
Assessment of Test Validity 10.4
Variable Equation
Final Test Report 11
D5185 Test Method for Determination of Additive Ele-
Reporting Calibration Test Results 11.1
ments, Wear Metals, and Contaminants in Used Lubricat-
Report Forms 11.2
Interim Non-Valid Calibration Test Summary 11.3
ing Oils and Determination of Selected Elements in Base
Severity Adjustments 11.4
Oils by Inductively Coupled Plasma Atomic Emission
Precision and Bias 12
7
Spec
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