ASTM D6750-08
Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Enginex2014;1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)

Standard No.
ASTM D6750-08
Release Date
2008
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D6750-09
Latest
ASTM D6750-23
Scope

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.

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 Methods

ASTM D6750-08 history

  • 2023 ASTM D6750-23 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)
  • 2019 ASTM D6750-19e1 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)
  • 2019 ASTM D6750-19 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)
  • 2018 ASTM D6750-18 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)
  • 2017 ASTM D6750-17 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)
  • 2016 ASTM D6750-16 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine&x2014;1K Procedure (0.4&x2009;% Fuel Sulfur) and 1N Procedure (0.04&x2009;% Fuel Sulfur)
  • 2015 ASTM D6750-15a Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine&x2014;1K Procedure (0.4&x2009;% Fuel Sulfur) and 1N Procedure (0.04&x2009;% Fuel Sulfur)
  • 2015 ASTM D6750-15 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine—1K Procedure (0.4芒鈧??? Fuel Sulfur) and 1N Procedure (0.04芒鈧??? Fuel Sulfur)
  • 2014 ASTM D6750-14 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Enginemdash;1K Procedure 40;0.4?% Fuel Sulfur41; and 1N Procedure 40;0.04?% Fuel Sulfur41;
  • 2013 ASTM D6750-13 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Enginemdash;1K Procedure (0.4?% Fuel Sulfur) and 1N Procedure (0.04?% Fuel Sulfur)
  • 2010 ASTM D6750-10b Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine&x2014;1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
  • 2010 ASTM D6750-10a Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine&x2014;1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
  • 2010 ASTM D6750-10 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine&x2014;1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
  • 2009 ASTM D6750-09 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Enginex2014;1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
  • 2008 ASTM D6750-08 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Enginex2014;1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
  • 2006 ASTM D6750-06 Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine-1K Procedure (0.4 % Fuel Sulfur) and 1N Procedure (0.04 % Fuel Sulfur)
  • 2005 ASTM D6750-05a 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)
  • 2005 ASTM D6750-05 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)
  • 2004 ASTM D6750-04 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)
  • 2002 ASTM D6750-02 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)


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