Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine<span class='unicode'>&#x2014;</span>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.  
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.  
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 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
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. 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 Annex A16 on Safety Precautions).
1.5 The following is the Table of Contents:
Section Introduction Scope1 Referenced documents2 Terminology3 Summary of Test Methods4 Significance and Use5 Apparatus6 General Laboratory Requirements6.1 Test Engine6.2 Test Engine Accessories and Parts6.3 Reagents and Materials7 Test Oil Sample Requirements8 Preparation of Apparatus 9 Engine Inspection9.1 Engine Pre-Test Lubrication System Flush9.2 Engine Pre-Test Measurements and Inspections9.3 Engine Assembly9.4 Pressure Testing of Fuel System Assembly9.5 Calibration of Engine Test Stand10 General Requirements and Frequency of Calibration10.1 Runs10.2 Specified Test Parameters10.3 Calibration Test Acceptance Criteria10.4 Action on Rejection of Calibration Test10.5 Test Numbering10.6 Reference Oils10.7 Severity Adjustments10.8 Engine Operating Procedure11 Engine Run-In11.1 Cool-Down Procedure11.2 Warm-Up Procedure11.3 Operating Conditions and Oil Additions11.4 Measurement of Oil Consumption11.5 Sampling Used Oil11....

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ASTM D6750-08 - Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine<span class='unicode'>&#x2014;</span>1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
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REDLINE ASTM D6750-08 - Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine<span class='unicode'>&#x2014;</span>1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
English language
68 pages
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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
Designation: D6750 – 08
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 (´) 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
2
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
3
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)
3
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 SI units are to be regarded as
oil consumption are measured.Also, the piston, the rings, and
standard. The values given in parentheses are provided for
the liner are examined for distress and the rings for mobility.
information only.
These test methods are required to evaluate oils intended to
1.4 This standard does not purport to address all of the
satisfy API service categories CF-4 and CH-4 for 1K, and
safety concerns, if any, associated with its use. It is the
CG-4 for 1N of Specification D4485.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific precau-
1
These test methods are under the jurisdiction of ASTM Committee D02 on
tionary statements appear throughout the text. Being engine
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.B0.02 on Heavy Duty Engine Oils. tests, these test methods do have definite hazards that shall be
Current edition approved Oct. 15, 2008. Published November 2008. Originally
met by safe practices (see Annex A16 on Safety Precautions).
approved in 2002. Last previous edition approved in 2006 as D6750–06. DOI:
1.5 The following is the Table of Contents:
10.1520/D6750-08.
2
Section
ASTM Test Monitoring Center (TMC), 6555 Penn Ave., Pittsburgh, PA
Introduction
15206-4489.TheTMC issues Information Letters that supplement this test method.
Scope 1
This edition incorporates revisions contained in all information letters through No.
Referenced documents 2
07–1.
3
Terminology 3
These1K/1NtestproceduresweredevelopedbyCaterpillarInc.,P.O.Box610,
Summary of Test Methods 4
Mossville, IL 61552-0610.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6750 – 08
D86 Test Method for Distillation of Petroleum Products at
Significance and Use 5
Apparatus 6
Atmospheric Pressure
General Laboratory Requirements 6.1
D93 Test Methods for Flash Point by Pensky-Martens
Test Engine 6.2
Test Engine Accessories and Parts 6.3 Closed Cup Tester
Reagents and Materials 7
D97 Test Method for Pour Point of Petroleum Products
Test Oil Sample Requirements 8
Preparation of Apparatus 9
D130 Test Metho
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:D6750–06 Designation: D 6750 – 08
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 (´) 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
2
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
1.1 These test methods cover the performance of engine oils intended for use in certain diesel engines. They are performed in
3
astandardizedhigh-speed,single-cylinderdieselenginebyeitherthe1K(0.4%fuelsulfur)or1N(0.04%fuelsulfur)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.
3
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
ofthesetestmethods,TMCwillupdatechangesinthesetestmethodsbytheissuanceofinformationletterswhichshallbeobtained
from TMC (see Annex A15).
1.3
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information
only.
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. 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 Annex A16 on Safety Precautions).
1.5 The following is the Table of Contents:
1
ThesetestmethodsareunderthejurisdictionofASTMCommitteeD02onPetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommitteeD02.B0.02
on Heavy Duty Engine Oils.
Current edition approved Nov. 1, 2006. Published December 2006. Originally approved in 2002. Last previous edition approved in 2005 as D6750–05a.
Current edition approved Oct. 15, 2008. Published November 2008. Originally approved in 2002. Last previous edition approved in 2006 as D6750–06.
2
ASTM Test Monitoring Center (TMC), 6555 PennAve., Pittsburgh, PA15206-4489. The TMC issues Information Letters that supplement this test method. This edition
incorporates revisions contained in all information letters through No. 05–2.07–1.
3
These 1K/1N test procedures were developed by Caterpillar Inc., P.O. Box 610, Mossville, IL 61552-0610.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6750–08
Section
Introduction
Scope 1
Referenced documents 2
Terminology 3
Summary of Test Methods 4
...

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