ASTM D6750-06
(Test Method)Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine-1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine-1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
SIGNIFICANCE AND USE
These are accelerated engine oil tests (known as the 1K and 1N test procedures), performed in a standardized, calibrated, stationary single-cylinder diesel engine using either 0.4 % sulfur fuel (1K test) or 0.04 % sulfur fuel (1N test), that give a measure of (1) piston and ring groove deposit forming tendency, (2) piston, ring and liner scuffing and (3) oil consumption.
The 1K test was correlated with vehicles equipped with certain multi-cylinder direct injection engines used in heavy duty and high speed service prior to 1989, particularly with respect to aluminum piston deposits, and oil consumption, when fuel sulfur was nominally 0.4 % by mass. These data are given in Research Report RR:D02-1273.8
The 1N test has been used to predict piston deposit formation in four-stroke cycle, direct injection, diesel engines that have been calibrated to meet 1994 U.S. federal exhaust emission requirements for heavy-duty engines operated on fuel containing less than 0.05 % mass sulfur. See Research Report RR:D02-1321.8
These test methods are used in the establishment of diesel engine oil specification requirements as cited in Specification D 4485 for appropriate API Performance Category oils (API 1509).
These test methods are also used in diesel engine oil development.
SCOPE
1.1 These test methods cover the performance of engine oils intended for use in certain diesel engines. They are performed in a standardized high-speed, single-cylinder diesel engine by either the 1K (0.4 % fuel sulfur) or 1N (0.04 % fuel sulfur) procedure. The only difference in the two test methods is the fuel used. Piston and ring groove deposit-forming tendency and oil consumption are measured. Also, the piston, the rings, and the liner are examined for distress and the rings for mobility. These test methods are required to evaluate oils intended to satisfy API service categories CF-4 and CH-4 for 1K, and CG-4 for 1N of Specification D 4485.
1.2 These test methods, although based on the original Caterpillar 1K/1N procedures, also embody TMC information letters issued before these test methods were first published. These test methods are subject to frequent change. Until the next revision of these test methods, TMC will update changes in these test methods by the issuance of information letters which shall be obtained from TMC (see Annex A15).
1.3 &combined-units;
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 precautionary statements appear throughout the text. Being engine tests, these test methods do have definite hazards that shall be met by safe practices (see on Safety Precautions).
1.4 The following is the Table of Contents:
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation: D 6750 – 06
Standard Test Methods for
Evaluation of Engine Oils in a High-Speed, Single-Cylinder
Diesel Engine—1K Procedure (0.4 % Fuel Sulfur) and 1N
1
Procedure (0.04 % Fuel Sulfur)
This standard is issued under the fixed designation D6750; 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 (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
The test methods described in this standard can be used by any properly equipped laboratory
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without outside assistance. However, the ASTM Test Monitoring Center (TMC) provides reference
oilsandanassessmentofthetestresultsobtainedonthoseoilsbythelaboratory(seeAnnexA15).By
this means, the laboratory will know whether its use of the test methods gives results statistically
similartothoseobtainedbyotherlaboratories.Furthermore,variousagenciesrequirethatalaboratory
uses the TMC services in seeking qualification of oils against specifications. For example, the U.S.
Army has such a requirement in some of its engine oil specifications.
Accordingly, these test methods are written for those laboratories that use the TMC services.
Laboratories that choose not to use these services may ignore those portions of the test methods that
refer to the TMC.
These test methods may be modified by Information Letters issued periodically by the TMC after
the publication of this edition of the standard to become part of it. These letters are obtainable from
theTMC.Inaddition,theTMCmayissuesupplementarymemorandarelatedtothetestmethods,also
obtainable from the TMC.
1. Scope 1.2 These test methods, although based on the original
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Caterpillar1K/1Nprocedures, alsoembodyTMCinformation
1.1 Thesetestmethodscovertheperformanceofengineoils
letters issued before these test methods were first published.
intended for use in certain diesel engines. They are performed
These test methods are subject to frequent change. Until the
in a standardized high-speed, single-cylinder diesel engine by
next revision of these test methods, TMC will update changes
either the 1K (0.4% fuel sulfur) or 1N (0.04% fuel sulfur)
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in these test methods by the issuance of information letters
procedure. The only difference in the two test methods is the
which shall be obtained from TMC (see Annex A15).
fuelused.Pistonandringgroovedeposit-formingtendencyand
1.3 The values stated in either SI units or inch-pound units
oil consumption are measured.Also, the piston, the rings, and
are to be regarded separately as standard. The values stated in
the liner are examined for distress and the rings for mobility.
each system may not be exact equivalents; therefore, each
These test methods are required to evaluate oils intended to
system shall be used independently of the other. Combining
satisfy API service categories CF-4 and CH-4 for 1K, and
values from the two systems may result in non-conformance
CG-4 for 1N of Specification D4485.
with the standard.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1
These test methods are under the jurisdiction of ASTM Committee D02 on
responsibility of the user of this standard to establish appro-
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
priate safety and health practices and determine the applica-
D02.B0.02 on Heavy Duty Engine Oils.
Current edition approved Nov. 1, 2006. Published December 2006. Originally
bility of regulatory limitations prior to use. Specific precau-
approved in 2002. Last previous edition approved in 2005 as D6750–05a.
tionary statements appear throughout the text. Being engine
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ASTM Test Monitoring Center (TMC), 6555 Penn Ave., Pittsburgh, PA
tests, these test methods do have definite hazards that shall be
15206-4489.TheTMC issues Information Letters that supplement this test method.
This edition incorporates revisions contained in all information letters through No. met by safe practices (see Annex A16 on Safety Precautions).
05–2.
1.5 The following is the Table of Contents:
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These1K/1NtestproceduresweredevelopedbyCaterpillarInc.,P.O.Box610,
Section
Mossville, IL 61552-0610.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6750–06
2. Referenced Documents
Introduction
Scope 1
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2.1 ASTM Standards:
Referenced documents 2
D86 Test Method for Distillation of Petroleum Products at
Terminology 3
Summary of Test Methods 4
Atmospheric Pressure
Significance and Use 5
D93 Test Methods for Flash Point by Pensky-Martens
Apparatus 6
General Laboratory Re
...
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