ASTM D6593-18e1

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 (Includes all amendments and changes 6/22/2022).

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STANDARD published on 1.10.2018

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The information about the standard:

Designation standards: ASTM D6593-18e1
Publication date standards: 1.10.2018
SKU: NS-1065679
The number of pages: 79
Approximate weight : 237 g (0.52 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Lubricants, industrial oils and related products

Annotation of standard text ASTM D6593-18e1 :

Keywords:

lubricating oils, Sequence VG, sludge and varnish, spark-ignition automotive engine, stop-and-go service,, ICS Number Code 75.100 (Lubricants, industrial oils and related products)

Additional information

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.

FIG. 1 Schematic of Engine Fuel System

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.

1. 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.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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 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

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

ASTM Test Monitoring Center Organization

Annex A1

ASTM Test Monitoring Center: Calibration Procedures

Annex A2

ASTM Test Monitoring Center: Maintenance Activities

Annex A3

ASTM Test Monitoring Center: Related Information

Annex A4

Safety Precautions

Annex A5

Control and Data Acquisition Requirements

Annex A6

Detailed Specifications and Photographs of Apparatus

Annex A7

Special Service Tools for the Test Engine

Annex A8

Test Engine Part Number Listing

Annex A9

External Oil Heat Exchanger Cleaning Technique

Annex A10

Sequence VG Report Forms and Data Dictionary

Annex A11

Dipstick Calibration

Annex A12

Critical Part Supplier List

Annex A13

Operational Data Log-Engine Oil

Annex A14

Rating Worksheets

Annex A15

Fuel Injector Flow Measurements

Annex A16

APPENDIXES

Piston and Ring Measurements Record Forms

Appendix X1

Sources of Materials and Information

Appendix X2

Description of Scott Quarterly Gas Audit Service

Appendix X3

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

D4175-23a	Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants (Includes all amendments and changes 12/21/2023).
D4057-22	Standard Practice for Manual Sampling of Petroleum and Petroleum Products
D3525-20	Standard Test Method for Gasoline Fuel Dilution in Used Gasoline Engine Oils by Wide-Bore Capillary Gas Chromatography
D3237-22	Standard Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy
D2789-95(2000)e1	Standard Test Method for Hydrocarbon Types in Low Olefinic Gasoline by Mass Spectrometry
D2622-21	Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
D1298-12b(2017)e1	Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method (Includes all amendments and changes 3/14/2023).
D1266-18	Standard Test Method for Sulfur in Petroleum Products (Lamp Method)
D873-22	Standard Test Method for Oxidation Stability of Aviation Fuels (Potential Residue Method)
D525-12a(2019)	Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method) (Includes all amendments and changes 12/12/2019).
D381-22	Standard Test Method for Gum Content in Fuels by Jet Evaporation
D86-23ae1	Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Includes all amendments and changes 2/9/2024).
D445-23	Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D323-20a	Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method) (Includes all amendments and changes 12/9/2020).
D235-22	Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
D287-22	Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer/Method)
ASTM Deposit Rating Manual 20
ANSI MC96.1	Temperature Measurement-Thermocouples
G40-22a	Standard Terminology Relating to Wear and Erosion (Includes all amendments and changes 11/11/2022).
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
D7422-23	Standard Test Method for Evaluation of Diesel Engine Oils in T-12 Exhaust Gas Recirculation Diesel Engine
D6304-20	Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration
D5862-09	Standard Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine (Withdrawn 2009)
D4294-21	Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry
D4485-22e1	Standard Specification for Performance of Active API Service Category Engine Oils (Includes all amendments and changes 12/8/2022).
D5059-21	Standard Test Methods for Lead and Manganese in Gasoline by X-Ray Fluorescence Spectroscopy
D5185-18	Standard Test Method for Multielement Determination of Used and Unused Lubricating Oils and Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)

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