Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions

SCOPE
1.1 This test method is commonly referred to as the Sequence VG test and has been correlated with vehicles used in stop-and-go service prior to 1996, particularly with regard to sludge and varnish formation. It is one of the test methods required to evaluate oils intended to satisfy the API SL performance category.
1.2 The values stated in SI units are to be regarded as 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. Specific hazard statements are given in 7.7, 7.10.2.2, 8.3.4.2, 8.4.4.3, 9.2.6, 9.3.4.5, 9.6.1.2, 12.1.1.7, 12.2.1.4, and Annex A1.
1.4 A Table of Contents follows:
SectionScope1Referenced Documents2ASTM Standards2.1SAE Standards2.2ANSI Standard2.3Terminology3Definitions3.1Definitions of Terms Specific to This Standard3.2Summary of Test Method4Significance and Use5Apparatus-General Description6Apparatus-The Test Engine7Sequence VG Test Engine7.1Required New Engine Parts7.2Reusable Engine Parts7.3Specially Fabricated Engine Parts7.4Special Engine Measurement and Assembly Equipment7.5Miscellaneous Engine Components-Preparation7.6Solvents and Cleaners Required7.7Assembling the Test Engine-Preparations7.8Assembling the Test Engine-Installations7.9Engine Installation on the Test Stand7.10Engine Fluids-Supply/Discharge Systems8Intake Air8.1Fuel and Fuel System8.2Engine Oil and Engine Oil System8.3Coolants8.4Measurement Instrumentation9Temperatures9.1Pressures9.2Flow Rates9.3Fuel Consumption9.4Speed and Load9.5Exhaust Gas9.6Humidity9.7Miscellaneous Laboratory Equipment10Test Stand Calibration11Test Procedure12Pre-Test Procedure12.1Engine Operating Procedure12.2Periodic Measurements and Functions12.3Special Maintenance Procedures12.4Diagnostic Data Review12.5End of Test Procedure12.6Interpretation of Test Results13Parts Rating Area-Environment13.1Sludge Ratings13.2Varnish Ratings13.3Clogging13.4Sticking13.5Used Oil Analyses13.6Assessment of Test Validity14General14.1Average Exhaust Gas NO x  Levels14.2Used Oil Analyses-Interpretation14.3Blowby Flow Rate14.4Manifold Absolute Pressure14.5Fuel Consumption Rate14.6Oil Consumption14.7Engine Parts Replacement14.8Quality Index and Deviation Percentage14.9Final Test Report15Report Forms15.1Photographs15.2Precision and Bias16Keywords17ANNEXES Safety PrecautionsAnnex A1Control and Data Acquisition RequirementsAnnex A2Detailed Specifications and Photographs of ApparatusAnnex A3Special Service Tools for the Test EngineAnnex A4Engine Parts Number ListingAnnex A5External Oil Heat Exchanger Cleaning TechniqueAnnex A6Final Report FormsAnnex A7Typical 4.6L Dipstick CalibrationAnnex A8Critical Part Supplier ListAnnex A9Oil Sampling, Addition and Leveling RecordAnnex A10Rating WorksheetsAnnex A11Fuel Injector Flow MeasurementsAnnex A12APPENDIXESSuggested Engine Measurement SheetsAppendix X1Sources of Materials and InformationAppendix X2Description of Scott Quarterly Gas Audit ServiceAppendix X3

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09-Jun-2002
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ASTM D6593-02 - Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 6593 – 02
Standard Test Method for
Evaluation of Automotive Engine Oils for Inhibition of
Deposit Formation in a Spark-Ignition Internal Combustion
Engine Fueled with Gasoline and Operated Under Low-
1
Temperature, Light-Duty Conditions
This standard is issued under the fixed designation D 6593; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
Reusable Engine Parts 7.3
Specially Fabricated Engine Parts 7.4
1.1 This test method is commonly referred to as the Se-
Special Engine Measurement and Assembly Equipment 7.5
2
quence VG test and has been correlated with vehicles used in
Miscellaneous Engine Components-Preparation 7.6
Solvents and Cleaners Required 7.7
stop-and-go service prior to 1996, particularly with regard to
Assembling the Test Engine-Preparations 7.8
3
sludge and varnish formation. It is one of the test methods
Assembling the Test Engine-Installations 7.9
required to evaluate oils intended to satisfy the API SL Engine Installation on the Test Stand 7.10
Engine Fluids-Supply/Discharge Systems 8
performance category.
Intake Air 8.1
1.2 The values stated in SI units are to be regarded as
Fuel and Fuel System 8.2
standard.
Engine Oil and Engine Oil System 8.3
Coolants 8.4
1.3 This standard does not purport to address all of the
Measurement Instrumentation 9
safety concerns, if any, associated with its use. It is the
Temperatures 9.1
responsibility of the user of this standard to establish appro- Pressures 9.2
Flow Rates 9.3
priate safety and health practices and determine the applica-
Fuel Consumption 9.4
bility of regulatory limitations prior to use. Specific hazard
Speed and Load 9.5
statements are given in 7.7, 7.10.2.2, 8.3.4.2, 8.4.4.3, 9.2.6, Exhaust Gas 9.6
Humidity 9.7
9.3.4.5, 9.6.1.2, 12.1.1.7, 12.2.1.4, and Annex A1.
Miscellaneous Laboratory Equipment 10
1.4 A Table of Contents follows:
Test Stand Calibration 11
Test Procedure 12
Section
Pre-Test Procedure 12.1
Scope 1
Engine Operating Procedure 12.2
Referenced Documents 2
Periodic Measurements and Functions 12.3
ASTM Standards 2.1
Special Maintenance Procedures 12.4
SAE Standards 2.2
Diagnostic Data Review 12.5
ANSI Standard 2.3
End of Test Procedure 12.6
Terminology 3
Interpretation of Test Results 13
Definitions 3.1
Parts Rating Area-Environment 13.1
Definitions of Terms Specific to This Standard 3.2
Sludge Ratings 13.2
Summary of Test Method 4
Varnish Ratings 13.3
Significance and Use 5
Clogging 13.4
Apparatus-General Description 6
Sticking 13.5
Apparatus-The Test Engine 7
Used Oil Analyses 13.6
Sequence VG Test Engine 7.1
Assessment of Test Validity 14
Required New Engine Parts 7.2
General 14.1
Average Exhaust Gas NO Levels 14.2
x
Used Oil Analyses-Interpretation 14.3
1
This test method is under the jurisdiction of ASTM Committee D02 on Blowby Flow Rate 14.4
Manifold Absolute Pressure 14.5
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
Fuel Consumption Rate 14.6
D02.B0.01 on Passenger Car Engine Oils.
Oil Consumption 14.7
Current edition approved June 10, 2002. Published September 2002. Originally
Engine Parts Replacement 14.8
published as D 6593–00. Last previous edition D 6593–01.
2 Quality Index and Deviation Percentage 14.9
Until the next revision of this test method, the ASTM Test Monitoring Center
Final Test Report 15
will update changes in the test method by means of information letters. Information
Report Forms 15.1
letters may be obtained from the ASTM Test Monitoring Center, 6555 Penn Ave.,
Photographs 15.2
Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporates
Precision and Bias 16
revisions in all information Letters through No. 01-3.
Keywords 17
3
Supporting data have been filed at ASTM International Headquarters and may
ANNEXES
be obtained by requesting Research Report RR: D02-1472.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D6593–02
ing Oils and Determination of Selected Elements in Base
Safety Precautions Annex A1
Control and Data Acquisition Requirements Annex A2
Oils by Inductively Coupled Plasma Atomic Emissions
Detailed Specifications and Photographs of Apparatus Annex A3
5
Spectrometry (ICP-AES)
Special Service Tools for the Test Engine Annex A4
D 5302 Test Method for Evaluation of Automotive Engin
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