Standard Test Method for Measurement of the Effects of Automotive Engine Oils on the Fuel Economy of Passenger Cars and Light-Duty Trucks in the Sequence VIB Spark Ignition Engine

SCOPE
1.1 This test method covers an engine test procedure for the measurement of the effects of automotive engine oils on the fuel economy of passenger cars and light-duty 3856 kg (8500 lb) or less gross vehicle weight trucks. The tests are conducted using a specified 4.6-L spark-ignition engine on a dynamometer test stand. It applies to multiviscosity grade oils used in these applications.
1.2 This test method also provides for the running of an abbreviated length test that is referred to as the VIBSJ. The procedure for VIBSJ is identical to the Sequence VIB with the exception of the items specifically listed in Annex A13. The procedure modifications listed in refer to the corresponding section of the Sequence VIB test method.
1.3 The unit values stated in this test method shall be regarded as the standard. Values given in parentheses are provided for information purposes only. SI units are considered the primary units for this test method. The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, and so forth.
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 and health practices and determine the applicability of regulatory limitations prior to use.

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31-Oct-2003
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ASTM D6837-03 - Standard Test Method for Measurement of the Effects of Automotive Engine Oils on the Fuel Economy of Passenger Cars and Light-Duty Trucks in the Sequence VIB Spark Ignition Engine
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation: D 6837 – 03
Standard Test Method for
Measurement of the Effects of Automotive Engine Oils on
the Fuel Economy of Passenger Cars and Light-Duty Trucks
,
1 2
in the Sequence VIB Spark Ignition Engine
This standard is issued under the fixed designation D 6837; 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 (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
The test method described in this standard can be used by any properly equipped laboratory, without
3
outside assistance. However, the STEM Test Monitoring Center (TMC) provides reference oils and
assessment of the test results obtained on those oils by the laboratory (see Annex A1). By this means,
the laboratory will know whether their use of the test method gives results statistically similar to those
obtained by other laboratories. Furthermore, various agencies require that a laboratory utilize the TMC
services in seeking qualification of oils against specifications. For example, the American Petroleum
Institute (API) imposes such a requirement, in connection with several U.S. Army engine lubricating
oil specifications.
Accordingly, this test method is written for use by laboratories, which utilize the TMC services.
Laboratories which choose not to use those services may simply ignore those portions of the test
method which refer to the TMC.
This test method may be modified by means of Information Letters issued by the TMC. In addition,
the TMC may issue supplementary memoranda related to the test method. Users of this test method
shall contact the TMC, Attention: Administrator, to obtain the most recent of these.
1. Scope procedure modifications listed in Annex A13 refer to the
corresponding section of the Sequence VIB test method.
1.1 This test method covers an engine test procedure for the
1.3 The unit values stated in this test method shall be
measurement of the effects of automotive engine oils on the
regarded as the standard. Values given in parentheses are
fuel economy of passenger cars and light-duty 3856 kg (8500
provided for information purposes only. SI units are considered
lb) or less gross vehicle weight trucks. The tests are conducted
the primary units for this test method. The only exception is
using a specified 4.6-L spark-ignition engine on a dynamom-
where there is no direct SI equivalent such as screw threads,
eter test stand. It applies to multiviscosity grade oils used in
national pipe threads/diameters, tubing size, and so forth.
these applications.
1.4 This standard does not purport to address all of the
1.2 This test method also provides for the running of an
safety concerns, if any, associated with its use. It is the
abbreviated length test that is referred to as the VIBSJ. The
responsibility of the user of this standard to establish appro-
procedure for VIBSJ is identical to the Sequence VIB with the
priate safety and health practices and determine the applica-
exception of the items specifically listed in Annex A13. The
bility of regulatory limitations prior to use.
1.5 This test method is arranged as follows:
1
This test method is under the jurisdiction of ASTM Committee D02 on
Subject Section
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
Introduction
D02.B0 on Automotive Lubricants.
Scope 1
Current edition approved Nov. 1, 2003. Published November 2003. Originally
Referenced Documents 2
approved in 2002. Last previous edition approved in 2002 as D 6837 – 02. Terminology 3
2
The multi-cylinder engine test sequences were originally developed in 1956 by Summary of Test Method 4
Significance and Use 5
an ASTM Committee D02 group. Subsequently, the procedures were published in an
Apparatus 6
ASTM special technical publication. The Sequence VIB was published as Research
General 6.1
Report RR:D02–1469 dated April 8, 1999.
3
Test Engine Configuration 6.2
ASTM Test Monitoring Center, 6555 Penn Avenue, Pittsburgh, PA 15206-4489.
Laboratory Ambient Conditions 6.3
For other information, refer to Research Report RR: D02:1469, Sequence VIB Test
Engine Speed and Load Control 6.4
Development. This research report and this test method are supplemented by
Information Letters and Memoranda issued by the ASTM TMC. This edition
incorporates revisions in all Information Letters through No. 03–2.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D6837–03
Subject Section Subject Section
Dynamometer 6.4.1 Fuel Injection System 9.3.17
Dynamometer Load 6.4.2 Intake Air System 9.3.18
Eng
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