ASTM D6593-15
(Test Method)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
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
SIGNIFICANCE AND USE
5.1 This test method is used to evaluate an automotive engine oil's control of engine deposits under operating conditions deliberately selected to accelerate deposit formation. This test method was correlated with field service data, determined from side-by-side comparisons of two or more oils in police, taxi fleets, and delivery van services. The same field service oils were then used in developing the operating conditions of this test procedure.
5.2 This test method, along with other test methods, defines the minimum performance level of the API Category SL (detailed information about this category is included in Specification D4485). This test method is also incorporated in automobile manufacturers' factory-fill specifications.
5.3 The basic engine used in this test method is representative of many that are in modern automobiles. This factor, along with the accelerated operating conditions, should be considered when interpreting test results.
SCOPE
1.1 This test method covers and is commonly referred to as the Sequence VG test,2 and it 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 the standard. No other units of measurement are included in this standard.
1.2.1 Exception—Where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, or specified single source equipment.
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, 12.1.1.7, 12.2.1.4, and Annex A1.
1.4 A Table of Contents follows:
Section
Scope
1
Referenced Documents
2
Terminology
3
Summary of Test Method
4
Significance and Use
5
Apparatus (General Description)
6
Apparatus (The Test Engine)
7
Sequence VG Test Engine
7.1
Required New Engine Parts
7.2
Reusable Engine Parts
7.3
Specially Fabricated Engine Parts
7.4
Special Engine Measurement and Assembly Equipment
7.5
Miscellaneous Engine Components-Preparation
7.6
Solvents and Cleaners Required
7.7
Assembling the Test Engine-Preparations
7.8
Assembling the Test Engine-Installations
7.9
Engine Installation on the Test Stand
7.10
Engine Fluids (Supply/Discharge Systems)
8
Intake Air
8.1
Fuel and Fuel System
8.2
Engine Oil and Engine Oil System
8.3
Coolants
8.4
Measurement Instrumentation
9
Temperatures
9.1
Pressures
9.2
Flow Rates
9.3
Fuel Consumption
9.4
Speed and Load
9.5
Exhaust Gas
9.6
Humidity
9.7
Miscellaneous Laboratory Equipment
10
Test Stand Calibration
11
Test Procedure
12
Pre-Test Procedure
12.1
Engine Operating Procedure
12.2
Periodic Measurements and Functions
12.3
Special Maintenance Procedures
12.4
Diagnostic Data Review
12.5
End of Test Procedure
12.6
Interpretation of Test Results
13
Parts Rating Area-Environment
13.1
Sludge Ratings
13.2
Varnish Ratings
13.3
Clogging
13.4
Sticking
13.5
Used Oil Analyses
13.6
Assessment of Test Validity
14
General
14.1
Used Oil Analyses-Interpretation
14.2
Blowby Flow Rate
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Designation: D6593 − 15
StandardTest 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 D6593; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
Section
Scope 1
1.1 This test method covers and is commonly referred to as
Referenced Documents 2
2
theSequenceVGtest, andithasbeencorrelatedwithvehicles Terminology 3
Summary of Test Method 4
used in stop-and-go service prior to 1996, particularly with
Significance and Use 5
3
regard to sludge and varnish formation. It is one of the test
Apparatus (General Description) 6
methods required to evaluate oils intended to satisfy the API Apparatus (The Test Engine) 7
Sequence VG Test Engine 7.1
SL performance category.
Required New Engine Parts 7.2
Reusable Engine Parts 7.3
1.2 The values stated in SI units are to be regarded as the
Specially Fabricated Engine Parts 7.4
standard. No other units of measurement are included in this
Special Engine Measurement and Assembly Equipment 7.5
standard.
Miscellaneous Engine Components-Preparation 7.6
Solvents and Cleaners Required 7.7
1.2.1 Exception—Where there is no direct SI equivalent
Assembling the Test Engine-Preparations 7.8
such as screw threads, national pipe threads/diameters, tubing
Assembling the Test Engine-Installations 7.9
size, or specified single source equipment. Engine Installation on the Test Stand 7.10
Engine Fluids (Supply/Discharge Systems) 8
1.3 This standard does not purport to address all of the
Intake Air 8.1
safety concerns, if any, associated with its use. It is the Fuel and Fuel System 8.2
Engine Oil and Engine Oil System 8.3
responsibility of the user of this standard to establish appro-
Coolants 8.4
priate safety and health practices and determine the applica-
Measurement Instrumentation 9
bility of regulatory limitations prior to use. Specific hazard Temperatures 9.1
Pressures 9.2
statements are given in 7.7, 7.10.2.2, 8.3.4.2, 8.4.4.3, 9.2.6,
Flow Rates 9.3
9.3.4.5, 12.1.1.7, 12.2.1.4, and Annex A1.
Fuel Consumption 9.4
1.4 ATable of Contents follows:
Speed and Load 9.5
Exhaust Gas 9.6
Humidity 9.7
Miscellaneous Laboratory Equipment 10
1
This test method is under the jurisdiction of ASTM Committee D02 on
Test Stand Calibration 11
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Test Procedure 12
Subcommittee D02.B0.01 on Passenger Car Engine Oils.
Pre-Test Procedure 12.1
Current edition approved April 1, 2015. Published April 2015. Originally
Engine Operating Procedure 12.2
approved in 2000. Last previous edition approved in 2014 as D6593–14a. DOI: Periodic Measurements and Functions 12.3
10.1520/D6593-15. Special Maintenance Procedures 12.4
2
Diagnostic Data Review 12.5
Until the next revision of this test method, the ASTM Test Monitoring Center
End of Test Procedure 12.6
will update changes in the test method by means of information letters. Information
Interpretation of Test Results 13
letters may be obtained from the ASTM Test Monitoring Center, 6555 Penn Ave.,
Parts Rating Area-Environment 13.1
Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporates
Sludge Ratings 13.2
revisions in all information Letters through No. 14–4.
3 Varnish Ratings 13.3
Supporting data have been filed atASTM International Headquarters and may
Clogging 13.4
be obtained by requesting Research Report RR:D02-1472.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6593 − 15
D3237TestMethodforLeadinGasolinebyAtomicAbsorp-
Sticking 13.5
Used Oil Analyses 13.6
tion Spectroscopy
Assessment of Test Validity 14
D3525Test Method for Gasoline Diluent in Used Gasoline
General 14.1
Engine Oils by Gas Chromatography
Used Oil Analyses-Interpretation 14.2
Blowby Flow Rate 14.3
D4057Practice for Manual Sampling of Petroleum and
Manifold Absolute Pressure 14.4
Petroleum Products
Fuel Consumption Rate 14.5
D4175 Terminology Relating to Petroleum, Petroleum
Oil Consumption 14.6
Engine Parts Replacement 14.7
Products, and Lubricants
Quality Index and Deviation Percentage 14.8
D4294Test Method for Sulfur in Petroleum and Petroleum
Final Test Report 15
Report Forms 15.1 Products by Energy Dispersive X-ray Fluorescence Spec-
Precision and Bias 16
trometry
Keywords 17
D4485Spe
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6593 − 14a D6593 − 15
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 D6593; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
2
1.1 This test method covers and is commonly referred to as the Sequence VG test, and it has been correlated with vehicles used
3
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 the standard. No other units of measurement are included in this standard.
1.2.1 Exception—Where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, or
specified single source equipment.
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, 12.1.1.7, 12.2.1.4, and
Annex A1.
1.4 A Table of Contents follows:
colwidth="0.80in"/COLSPEC
Section
Scope 1
Referenced Documents 2
Terminology 3
Summary of Test Method 4
Significance and Use 5
Apparatus (General Description) 6
Apparatus (The Test Engine) 7
Sequence VG Test Engine 7.1
Required New Engine Parts 7.2
Reusable Engine Parts 7.3
Specially Fabricated Engine Parts 7.4
Special Engine Measurement and Assembly Equipment 7.5
Miscellaneous Engine Components-Preparation 7.6
Solvents and Cleaners Required 7.7
Assembling the Test Engine-Preparations 7.8
Assembling the Test Engine-Installations 7.9
Engine Installation on the Test Stand 7.10
Engine Fluids (Supply/Discharge Systems) 8
Intake Air 8.1
Fuel and Fuel System 8.2
Engine Oil and Engine Oil System 8.3
Coolants 8.4
Measurement Instrumentation 9
Temperatures 9.1
Pressures 9.2
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.B0.01 on Passenger Car Engine Oils.
Current edition approved Oct. 1, 2014April 1, 2015. Published October 2014April 2015. Originally approved in 2000. Last previous edition approved in 2014 as
D6593 – 14.D6593 – 14a. DOI: 10.1520/D6593-14A.10.1520/D6593-15.
2
Until the next revision of this test method, the ASTM Test Monitoring Center will update changes in the test method by means of information letters. Information letters
may be obtained from the ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporates revisions in all
information Letters through No. 14–3.14–4.
3
Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:D02-1472.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6593 − 15
Flow Rates 9.3
Fuel Consumption 9.4
Speed and Load 9.5
Exhaust Gas 9.6
Humidity 9.7
Miscellaneous Laboratory Equipment 10
Test Stand Calibration 11
Test Procedure 12
Pre-Test Procedure 12.1
Engine Operating Procedure 12.2
Periodic Measurements and Functions 12.3
Special Maintenance Procedures 12.4
Diagnostic Data Review 12.5
End of Test Procedure 12.6
Interpretation of Test Results 13
Parts Rating Area-Environment 13.1
Sludge Ratings 13.2
Varnish Ratings 13.3
Clogging 13.4
Sticking 13.5
Used Oil Analyses 13.6
Additional Measurements 13.7
Assessment of Test Validity 14
General 14.1
Used Oil Analyses-Interpretation 14.2
Blowby Flow Rate 14.3
Manifold Absolute Pressure 14.4
Fuel Consumption Rate 14.5
Oil Consumption 14.6
Engine Parts Replacement 14.7
Quality Index and Deviation Percentage 14.8
Final Test Report 15
Report Forms 15.1
Precision and Bias 16
Keywords 17
ANNEXES
Saf
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