Standard Historical Last Updated: Dec 31, 2010
ASTM D7484-08

Standard Test Method for Evaluation of Automotive Engine Oils for Valve-Train Wear Performance in Cummins ISB Medium-Duty Diesel Engine

Standard Test Method for Evaluation of Automotive Engine Oils for Valve-Train Wear Performance in Cummins ISB Medium-Duty Diesel Engine
$ 98.00 In stock

Significance and Use

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.

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.


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 either SI units, inch-pound units, or other units are to be regarded separately as the primary units.

1.2.1 For each parameter, the primary units are shown first. Secondary units may be shown in parentheses, for information purposes only. These secondary units may or may not be exact equivalents to the primary units.

1.2.2 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, and tubing size.

1.2.3 See also A8.1 for clarification; it does not supersede 1.2.1 and 1.2.2.

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. See Annex A1 for general safety precautions.

1.4 Table of Contents:

Referenced Documents2
Summary of Test Method4
Significance and Use5
Engine Fluids and Cleaning Solvents7
Preparation of Apparatus8
Engine/Stand Calibration and Non-Reference Oil Tests9
Test Procedure10
Calculations, Ratings, and Test Validity11
Precision and Bias14
Safety PrecautionsAnnex A1
Intake Air AftercoolerAnnex A2
The Cummins ISB Engine Build Parts KitAnnex A3
Sensor Locations and Special HardwareAnnex A4
External Oil SystemAnnex A5
Fuel SpecificationAnnex A6
Cummins Service PublicationsAnnex A7
Specified Units and FormatsAnnex A8
Oil AnalysesAnnex A9
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Book of Standards Volume: 05.04
Developed by Subcommittee: D02.B0
Pages: 25
DOI: 10.1520/D7484-08
ICS Code: 75.100