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ASTM D7547-14

(Specification)

Standard Specification for Hydrocarbon Unleaded Aviation Gasoline

Standard Specification for Hydrocarbon Unleaded Aviation Gasoline

SCOPE
1.1 This specification covers formulating specifications for purchases of aviation gasoline under contract and is intended primarily for use by purchasing agencies.  
1.2 This specification defines a specific type of aviation gasoline, containing no lead. It does not include all gasolines satisfactory for reciprocating aviation engines. Certain equipment or conditions of use may permit a wider, or require a narrower, range of characteristics than is shown by this specification.  
1.3 This specification, unless otherwise provided, prescribes the required properties of unleaded aviation gasoline at the time and place of delivery.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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.

General Information

Status
Historical
Publication Date
30-Apr-2014
ICS
75.160.20 - Liquid fuels
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.J0.02 - Aviation Piston Engine Fuels
Current Stage
Ref Project

Relations

Replaces
ASTM D7547-13 - Standard Specification for Hydrocarbon Unleaded Aviation Gasoline
Effective Date
01-May-2014
Replaced By
ASTM D7547-14a - Standard Specification for Hydrocarbon Unleaded Aviation Gasoline
Effective Date
15-May-2014
Referred By
ASTM D7826-23a - Standard Guide for Evaluation of New Aviation Gasolines and New Aviation Gasoline Additives
Effective Date
01-May-2014
Referred By
ASTM D910-21 - Standard Specification for Leaded Aviation Gasolines
Effective Date
01-May-2014
Referred By
ASTM D4304-22 - Standard Specification for Mineral and Synthetic Lubricating Oil Used in Steam or Gas Turbines
Effective Date
01-May-2014
Referred By
ASTM F2245-23 - Standard Specification for Design and Performance of a Light Sport Airplane
Effective Date
01-May-2014
Referred By
ASTM D4171-22 - Standard Specification for Fuel System Icing Inhibitors
Effective Date
01-May-2014
Referred By
ASTM D4529-17 - Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
Effective Date
01-May-2014

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ASTM D7547-14 - Standard Specification for Hydrocarbon Unleaded Aviation Gasoline
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REDLINE ASTM D7547-14 - Standard Specification for Hydrocarbon Unleaded Aviation GasolineREDLINE ASTM D7547-14 - Standard Specification for Hydrocarbon Unleaded Aviation Gasoline
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REDLINE ASTM D7547-14 - Standard Specification for Hydrocarbon Unleaded Aviation Gasoline
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Standards Content (Sample)

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
Designation:D7547 −14 AnAmerican National Standard
Standard Specification for
1
Hydrocarbon Unleaded Aviation Gasoline
This standard is issued under the fixed designation D7547; 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* D873 Test Method for Oxidation Stability of Aviation Fuels
(Potential Residue Method)
1.1 This specification covers formulating specifications for
D1094 Test Method for Water Reaction of Aviation Fuels
purchases of aviation gasoline under contract and is intended
D1298 Test Method for Density, Relative Density, or API
primarily for use by purchasing agencies.
Gravity of Crude Petroleum and Liquid Petroleum Prod-
1.2 This specification defines a specific type of aviation
ucts by Hydrometer Method
gasoline, containing no lead. It does not include all gasolines
D2386 Test Method for Freezing Point of Aviation Fuels
satisfactory for reciprocating aviation engines. Certain equip-
D2622 Test Method for Sulfur in Petroleum Products by
ment or conditions of use may permit a wider, or require a
Wavelength Dispersive X-ray Fluorescence Spectrometry
narrower, range of characteristics than is shown by this
D2624 Test Methods for Electrical Conductivity ofAviation
specification.
and Distillate Fuels
D2700 Test Method for Motor Octane Number of Spark-
1.3 Thisspecification,unlessotherwiseprovided,prescribes
the required properties of unleaded aviation gasoline at the Ignition Engine Fuel
D3237 TestMethodforLeadinGasolinebyAtomicAbsorp-
time and place of delivery.
tion Spectroscopy
1.4 The values stated in SI units are to be regarded as
D3338 Test Method for Estimation of Net Heat of Combus-
standard. No other units of measurement are included in this
tion of Aviation Fuels
standard.
D3341 Test Method for Lead in Gasoline—Iodine Mono-
1.5 This standard does not purport to address all of the
chloride Method
safety concerns, if any, associated with its use. It is the
D4052 Test Method for Density, Relative Density, and API
responsibility of the user of this standard to establish appro-
Gravity of Liquids by Digital Density Meter
priate safety and health practices and determine the applica-
D4057 Practice for Manual Sampling of Petroleum and
bility of regulatory limitations prior to use.
Petroleum Products
D4171 Specification for Fuel System Icing Inhibitors
2. Referenced Documents
D4177 Practice for Automatic Sampling of Petroleum and
2
2.1 ASTM Standards: Petroleum Products
D86 Test Method for Distillation of Petroleum Products at D4306 Practice for Aviation Fuel Sample Containers for
Atmospheric Pressure Tests Affected by Trace Contamination
D130 Test Method for Corrosiveness to Copper from Petro- D4529 Test Method for Estimation of Net Heat of Combus-
leum Products by Copper Strip Test
tion of Aviation Fuels
D323 TestMethodforVaporPressureofPetroleumProducts D4809 Test Method for Heat of Combustion of Liquid
(Reid Method)
Hydrocarbon Fuels by Bomb Calorimeter (Precision
Method)
D4865 Guide for Generation and Dissipation of Static Elec-
1
tricity in Petroleum Fuel Systems
This specification is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
D5006 Test Method for Measurement of Fuel System Icing
Subcommittee D02.J0.02 on J2 Spark and Compression Ignition Aviation Engine
Inhibitors (Ether Type) in Aviation Fuels
Fuels.
D5059 Test Methods for Lead in Gasoline by X-Ray Spec-
Current edition approved May 1, 2014. Published May 2014. Originally
troscopy
approved in 2009. Last previous edition approved in 2013 as D7547 – 13. DOI:
10.1520/D7547-14.
D5191 Test Method for Vapor Pressure of Petroleum Prod-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ucts (Mini Method)
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
D6469 GuideforMicrobialContaminationinFuelsandFuel
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Systems
*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 ----------------------
D7547−14
NOTE 2—Addition of isopropyl alcohol (IPA) can reduce knock ratings
E29 Practice for Using Significant Digits in Test Data to
3
below minimum specification values (see X1.2.3).
Determine Conformance with Specifications
5.2.2.2 Di-Ethylene Glycol Monomethyl Ether (Di-EGME),
3. Terminology
conforming to the requirements of Specification D4171 (Type
III) may b
...

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: D7547 − 13 D7547 − 14 An American National Standard
Standard Specification for
1
Hydrocarbon Unleaded Aviation Gasoline
This standard is issued under the fixed designation D7547; 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*
1.1 This specification covers formulating specifications for purchases of aviation gasoline under contract and is intended
primarily for use by purchasing agencies.
1.2 This specification defines a specific type of aviation gasoline, containing no lead. It does not include all gasolines
satisfactory for reciprocating aviation engines. Certain equipment or conditions of use may permit a wider, or require a narrower,
range of characteristics than is shown by this specification.
1.3 This specification, unless otherwise provided, prescribes the required properties of unleaded aviation gasoline at the time
and place of delivery.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D86 Test Method for Distillation of Petroleum Products at Atmospheric Pressure
D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test
D323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)
D873 Test Method for Oxidation Stability of Aviation Fuels (Potential Residue Method)
D1094 Test Method for Water Reaction of Aviation Fuels
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D2386 Test Method for Freezing Point of Aviation Fuels
D2622 Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
D2624 Test Methods for Electrical Conductivity of Aviation and Distillate Fuels
D2700 Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
D3237 Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy
D3338 Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
D3341 Test Method for Lead in Gasoline—Iodine Monochloride Method
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4171 Specification for Fuel System Icing Inhibitors
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D4306 Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination
D4529 Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
D4809 Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter (Precision Method)
D4865 Guide for Generation and Dissipation of Static Electricity in Petroleum Fuel Systems
1
This specification is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.J0.02 on Aviation GasolineJ2 Spark and Compression Ignition Aviation Engine Fuels.
Current edition approved May 1, 2013May 1, 2014. Published August 2013May 2014. Originally approved in 2009. Last previous edition approved in 20122013 as
D7547 – 12.D7547 – 13. DOI: 10.1520/D7547-13.10.1520/D7547-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
D7547 − 14
D5006 Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels
D5190D5059 Test Method for Vapor Pressure of Petroleum Products (Automatic Method)Methods for Lead in Gasoline by
X-Ray Spectroscopy (Withdrawn 2012)
D5191 Test Method for Vapor
...

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ASTM D3701-23(Test Method)
Standard Test Method for Hydrogen Content of Aviation Turbine Fuels by Low Resolution Nuclear Magnetic Resonance Spectrometry

SIGNIFICANCE AND USE
5.1 The combustion quality of aviation turbine fuel has traditionally been controlled in specifications by such tests as smoke point (see Test Method D1322), smoke volatility index, aromatic content of luminometer number (see Test Method D1740). Evidence is accumulating that a better control of the quality may be obtained by limiting the minimum hydrogen content of the fuel.  
5.2 Existing methods allow the hydrogen content to be calculated from other parameters or determined by combustion techniques. The method specified provides a quick, simple, and more precise alternative to these methods.
SCOPE
1.1 This test method covers the determination of the hydrogen content of aviation turbine fuels.  
1.2 Use Test Methods D4808 or D7171 for the determination of hydrogen in other petroleum liquids.  
1.3 The values stated in SI units are to be regarded as standard. The preferred units are mass percent hydrogen.  
1.4 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. For a specific warning statement, see 7.1.  
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ASTM D7826-23b(Guide)
Standard Guide for Evaluation of New Aviation Gasolines and New Aviation Gasoline Additives

SIGNIFICANCE AND USE
5.1 This guide is intended for the developers or sponsors of new aviation gasolines or additives to describe the data requirements necessary to support the development of specifications for these new products by ASTM members. The ultimate goal of the data generated in accordance with this guide is to provide an understanding of the performance of the new fuel or additive within the property constraints and compositional bounds of the proposed specification criteria.  
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5.3 This guide will reduce the uncertainty and risk to developers or sponsors of new aviation gasolines or additives by describing the test and analysis requirements necessary to proceed with the development of an ASTM International specification for aviation gasoline or specification revision for an aviation gasoline additive. There are certain sections within this guide that do not specify an exact number of data points required. For example, 6.2.4.3 requires viscosity to be measured from freezing point to room temperature; 6.2.4.4, 6.2.4.5, and 6.3.2.3 require measurements over the operating temperature range; 6.3.2.4 and 6.3.2.5 require measurements versus temperature. In these cases, the developers or sponsors of new aviation gasolines or additives should attempt to generate data close to the upper and lower boundaries indicated. If no boundary is specified (for example, generate data versus temperature), then data at the widest practical test limits should be generated. A minimum of three data points is required in all cases (for example, upper, middle, lower), while five or more data points are preferred.  
5.4 This guide does not purport to specify an all-inclusive listing of test and analysis requirements to achieve ASTM International approval ...
SCOPE
1.1 This guide provides procedures to develop data for use in research reports for new aviation gasolines or new aviation gasoline additives.  
1.2 This data is intended to be used by the ASTM subcommittee to make a determination of the suitability of the fuel for use as an aviation fuel in either a fleet-wide or limited capacity, and to make a determination that the proposed properties and criteria in the associated standard specification provide the necessary controls to ensure this fuel maintains this suitability during high-volume production.  
1.3 These research reports are intended to support the development and issuance of new specifications or specification revisions for these products. Guidance to develop ASTM International standard specifications for aviation gasoline is provided in Subcommittee J on Aviation Fuels Operating Procedures, Annex A6, “Guidelines for the Development and Acceptance of a New Aviation Fuel Specification for Spark-Ignition Reciprocating Engines.”  
1.4 The procedures, tests, selection of materials, engines, and aircraft detailed in this guide are based on industry expertise to give appropriate data for review. Because of the diversity of aviation hardware and potential variation in fuel/additive formulations, not every aspect may be encompassed and further work may be required. Therefore, additional data beyond that described in this guide may be requested by the ASTM task force, Subcommittee J, or Committee D02 upon review of the specific composition, performance, or other characteristics of the candidate fuel or additive.  
1.5 While it is beyond the scope of this guide, investigation of the future health and environmental impacts of the new aviation gasoline or new aviation gasoline additive and the requirements of environmental agencies is recommended.  
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SIGNIFICANCE AND USE
5.1 Some acids can be present in aviation turbine fuels due either to the acid treatment during the refining process or to naturally occurring organic acids. Significant acid contamination is not likely to be present because of the many check tests made during the various stages of refining. However, trace amounts of acid can be present and are undesirable because of the consequent tendencies of the fuel to corrode metals that it contacts or to impair the water separation characteristics of the aviation turbine fuel.  
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SCOPE
1.1 This test method covers the determination of the acidity in aviation turbine fuel in the range from 0.000 mg/g to 0.100 mg/g KOH.  
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1.3 This test method is limited to the use of X-ray fluorescence (XRF) spectrometers employing an X-ray tube for excitation in conjunction with wavelength dispersive detection system or energy dispersive high resolution semiconductor detector with the ability to separate signals of adjacent and near-adjacent elements.  
1.4 This test method uses inter-element correction factors calculated from XRF theory, the fundamental parameters (FP) approach, or best fit regression.  
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5.1 The analysis of trace oxygenates in automotive spark-ignition engine fuel has become routine in certain areas to ensure compliance whenever oxygenated fuels are used. In addition, test methods to measure trace levels of oxygenates in automotive spark-ignition fuel are necessary to assess product quality.
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1.1 This test method covers the determination of trace oxygenates in automotive spark-ignition engine fuel. The method used is a multidimensional gas chromatographic method using 1,2-dimethoxy ethane as the internal standard. The oxygenates that are analyzed are: methyl-tertiary butyl ether (MTBE), ethyl-tertiary butyl ether (ETBE), diisopropyl ether (DIPE), methanol, tertiary-amyl methyl ether (TAME), n-propanol, i-propanol, n-butanol, i-butanol, tert-butyl alcohol, sec-butyl alcohol, and tert-pentanol. Ethanol is usually not measured as a trace oxygenate since ethanol can be used as the main oxygenate compound in finished automotive spark-ignition fuels such as reformulated automotive spark-ignition fuels. The concentration range of the oxygenates covered in the ILS study was from 10 mg/kg to 2000 mg/kg. In addition this method is also suitable for the measurement of the C5 isomeric alcohols (2-methyl-1-butanol, 2-methyl-2-butanol) present from the fermentation of ethanol.  
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ASTM D4808-23(Test Method)
Standard Test Methods for Hydrogen Content of Light Distillates, Middle Distillates, Gas Oils, and Residua by Low-Resolution Nuclear Magnetic Resonance Spectroscopy

SIGNIFICANCE AND USE
5.1 The hydrogen content represents a fundamental quality of a petroleum product that has been correlated with many of the performance characteristics of that product.  
5.2 This test method provides a simple and more precise alternative to existing test methods, specifically combustion techniques (Test Methods D5291) for determining the hydrogen content on a range of petroleum products.
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1.1 These test methods cover the determination of the hydrogen content of petroleum products ranging from atmospheric distillates to vacuum residua using a continuous wave, low-resolution nuclear magnetic resonance spectrometer. (Test Method D3701 is the preferred method for determining the hydrogen content of aviation turbine fuels using nuclear magnetic resonance spectroscopy.)  
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Test Method  
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(approximate)  
A  
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B  
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Gas Oils  
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C  
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5.1 The tendency of a fuel to vaporize in automotive engine fuel systems is indicated by the vapor-liquid ratio of the fuel.  
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1.1 This test method covers the determination of the temperature at which the vapor formed from a selected volume of volatile petroleum product saturated with air at 0 °C to 1 °C (32 °F to 34 °F) produces a pressure of 101.3 kPa (one atmosphere) against vacuum. This test method is applicable to samples for which the determined temperature is between 36 °C and 80 °C (97 °F and 176 °F) and the vapor-liquid ratio is between 8 to 1 and 75 to 1.
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1.3 The values stated in SI units are to be regarded as standard.  
1.3.1 Exception—The values given in parentheses are provided for information only.  
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ASTM D5001-23(Test Method)
Standard Test Method for Measurement of Lubricity of Aviation Turbine Fuels by the Ball-on-Cylinder Lubricity Evaluator (BOCLE)

SIGNIFICANCE AND USE
5.1 Wear due to excessive friction resulting in shortened life of engine components such as fuel pumps and fuel controls has sometimes been ascribed to lack of lubricity in an aviation fuel.  
5.2 The relationship of test results to aviation fuel system component distress due to wear has been demonstrated for some fuel/hardware combinations where boundary lubrication is a factor in the operation of the component.  
5.3 The wear scar generated in the ball-on-cylinder lubricity evaluator (BOCLE) test is sensitive to contamination of the fluids and test materials, the presence of oxygen and water in the atmosphere, and the temperature of the test. Lubricity measurements are also sensitive to trace materials acquired during sampling and storage. Containers specified in Practice D4306 shall be used.  
5.4 The BOCLE test method may not directly reflect operating conditions of engine hardware. For example, some fuels that contain a high content of certain sulfur compounds can give anomalous test results.
SCOPE
1.1 This test method covers assessment of the wear aspects of the boundary lubrication properties of aviation turbine fuels on rubbing steel surfaces.  
1.1.1 This test method incorporates two procedures, one using a semi-automated instrument and the second a fully automated instrument. Either of the two instruments may be used to carry out the test.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address 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 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.

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ASTM
ASTM D7398-23(Test Method)
Standard Test Method for Boiling Range Distribution of Fatty Acid Methyl Esters (FAME) in the Boiling Range from 100 °C to 615 °C by Gas Chromatography

SIGNIFICANCE AND USE
5.1 The boiling range distribution of FAMES provides an insight into the composition of product related to the transesterification process. This gas chromatographic determination of boiling range can be used to replace conventional distillation methods for product specification testing with the mutual agreement of interested parties.  
5.2 Biodiesel (FAMES) exhibits a boiling point rather than a distillation curve. The fatty acid chains in the raw oils and fats from which biodiesel is produced are mainly comprised of straight chain hydrocarbons with 16 to 18 carbons that have similar boiling temperatures. The atmospheric boiling point of biodiesel generally ranges from 330 °C to 357 °C. The Specification D6751 value of 360 °C max at 90 % off by Test Method D1160 was incorporated as a precaution to ensure the fuel has not been adulterated with high boiling contaminants.
SCOPE
1.1 This test method covers the determination of the boiling range distribution of fatty acid methyl esters (FAME). This test method is applicable to FAMES (biodiesel, B100) having an initial boiling point greater than 100 °C and a final boiling point less than 615 °C at atmospheric pressure as measured by this test method.  
1.2 The test method can also be applicable to blends of diesel and biodiesel (B1 through B100), however precision for these samples types has not been evaluated.  
1.3 The test method is not applicable for analysis of petroleum containing low molecular weight components (for example naphthas, reformates, gasolines, crude oils).  
1.4 Boiling range distributions obtained by this test method are not equivalent to results from low efficiency distillation such as those obtained with Test Method D86 or D1160, especially the initial and final boiling points.  
1.5 This test method uses the principles of simulated distillation methodology. See Test Methods D2887, D6352, and D7213.  
1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.7 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.  
1.8 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.

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ASTM
ASTM D7484-23a(Test Method)
Standard Test Method for Evaluation of Automotive Engine Oils for Valve-Train Wear Performance in Cummins ISB Medium-Duty Diesel Engine

SIGNIFICANCE AND USE
5.1 This test method was developed to assess the performance of a heavy-duty engine oil in controlling engine wear under operating conditions selected to accelerate soot production and valve-train wear in a turbocharged and aftercooled four-cycle diesel engine with sliding tappet followers equipped with exhaust gas recirculation hardware.  
5.2 The design of the engine used in this test method is representative of many, but not all, modern diesel engines. This factor, along with the accelerated operating conditions, shall be considered when extrapolating test results.
SCOPE
1.1 This test method, commonly referred to as the Cummins ISB Test, covers the utilization of a modern, 5.9 L, diesel engine equipped with exhaust gas recirculation and is used to evaluate oil performance with regard to valve-train wear.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.2.1 Exceptions—SI units are provided for all parameters except where there is no direct equivalent such as the units for screw threads, National Pipe Threads/diameters, tubing size, or where there is a sole source of supply equipment specification.  
1.2.2 See also A7.1 for clarification; it does not supersede 1.2 and 1.2.1.  
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. See Annex A1 for general safety precautions.  
1.4 Table of Contents:    
Section  
Scope  
1  
Referenced Documents  
2  
Terminology  
3  
Summary of Test Method  
4  
Significance and Use  
5  
Apparatus  
6  
Engine Fluids and Cleaning Solvents  
7  
Preparation of Apparatus  
8  
Engine/Stand Calibration and Non-Reference Oil Tests  
9  
Test Procedure  
10  
Calculations, Ratings, and Test Validity  
11  
Report  
12  
Precision and Bias  
13  
Annexes  
Safety Precautions  
Annex A1  
Intake Air Aftercooler  
Annex A2  
The Cummins ISB Engine Build Parts Kit  
Annex A3  
Sensor Locations and Special Hardware  
Annex A4  
External Oil System  
Annex A5  
Cummins Service Publications  
Annex A6  
Specified Units and Formats  
Annex A7  
Oil Analyses  
Annex A8  
Alternate Fuel Approval Process  
Annex A9  
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.

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