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ASTM D6593-04

ASTM D6593-04

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

2017-08-16 /Historical
Superseeded by:

1.1 This test method is commonly referred to as the Sequence VG test² and has been correlated with vehicles used in stop-and-go service prior to 1996, particularly with regard to sludge and varnish formation.³ 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,,,, 9.2.6,,,, and Annex A1.

1.4 A Table of Contents follows:

Referenced Documents2
ASTM Standards2.1
SAE Standards3.2.3
ANSI Standard2.2
Definitions of Terms Specific to This Standard3.2
Summary of Test Method4
Significance and Use5
Apparatus-General Description6
Apparatus-The Test Engine7
Sequence VG Test Engine7.1
Required New Engine Parts7.2
Reusable Engine Parts7.3
Specially Fabricated Engine Parts7.4
Special Engine Measurement and Assembly Equipment7.5
Miscellaneous Engine Components-Preparation7.6
Solvents and Cleaners Required7.7
Assembling the Test Engine-Preparations7.8
Assembling the Test Engine-Installations7.9
Engine Installation on the Test Stand7.10
Engine Fluids-Supply/Discharge Systems8
Intake Air8.1
Fuel and Fuel System8.2
Engine Oil and Engine Oil System8.3
Measurement Instrumentation9
Flow Rates9.3
Fuel Consumption9.4
Speed and Load9.5
Exhaust Gas9.6
Miscellaneous Laboratory Equipment10
Test Stand Calibration11
Test Procedure12
Pre-Test Procedure12.1
Engine Operating Procedure12.2
Periodic Measurements and Functions12.3
Special Maintenance Procedures12.4
Diagnostic Data Review12.5
End of Test Procedure12.6
Interpretation of Test Results13
Parts Rating Area-Environment13.1
Sludge Ratings13.2
Varnish Ratings13.3
Used Oil Analyses13.6
Assessment of Test Validity14
Average Exhaust Gas NOx Levels13.1.5
Used Oil Analyses-Interpretation14.2
Blowby Flow Rate14.3
Manifold Absolute Pressure14.4
Fuel Consumption Rate14.5
Oil Consumption14.6
Engine Parts Replacement14.7
Quality Index and Deviation Percentage14.8
Final Test Report15
Report Forms15.1
Precision and Bias16
Safety PrecautionsAnnex A1
Control and Data Acquisition RequirementsAnnex A2
Detailed Specifications and Photographs of ApparatusAnnex A3
Special Service Tools for the Test EngineAnnex A4
Test Engine Part Number ListingAnnex A5
External Oil Heat Exchanger Cleaning TechniqueAnnex A6
Sequence VG Report Forms and Data DictionaryAnnex A7
Dipstick CalibrationAnnex A8
Critical Part Supplier ListAnnex A9
Operational Data Log-Engine OilAnnex A10
Rating WorksheetsAnnex A11
Fuel Injector Flow MeasurementsAnnex A12
Piston and Ring Measurements Record FormsAppendix X1
Sources of Materials and InformationAppendix X2
Description of Scott Quarterly Gas Audit ServiceAppendix X3

lubricating oils; sequence VG; sludge and varnish; spark-ignition automotive engine; stop-and-go service
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