ASTM-D7422 › Historical Revision Information
Standard Test Method for Evaluation of Diesel Engine Oils in T-12 Exhaust Gas Recirculation Diesel Engine
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Scope
1.1 This test method covers an engine test procedure for evaluating diesel engine oils for performance characteristics, including lead corrosion and wear of piston rings and cylinder liners in an engine equipped with exhaust gas recirculation and running on ultra-low sulfur diesel fuel.2 This test method is commonly referred to as the Mack T-12.
1.1.1 This test method also provides the procedure for running an abbreviated length test, which is commonly referred to as the T-12A. The procedures for the T-12 and T-12A are identical with the exception of the items specifically listed in Annex A9. Additionally, the procedure modifications listed in Annex A9 refer to the corresponding section of the T-12 procedure.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Exception—Where there is no direct SI equivalent, such as the units for screw threads, National Pipe Threads/diameters, tubing size, and single source supply equipment specifications.
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 A6 for specific safety precautions.
Significance and Use
5.1 This test method was developed to evaluate the wear performance of engine oils in turbocharged and intercooled four-cycle diesel engines equipped with EGR and running on ultra-low sulfur diesel fuel. Obtain results from used oil analysis and component measurements before and after test.
5.2 The test method may be used for engine oil specification acceptance when all details of the procedure are followed.
Keywords
cylinder liner wear; diesel engine oil; exhaust gas recirculation; lead; lubricants; oil consumption; oxidation; soot; T-12 Diesel Engine; top ring mass loss; ultra-low sulfur diesel fuel; ICS Number Code 75.160.20 (Liquid fuels)
To find similar documents by ASTM Volume:
05.04 (Petroleum Products and Lubricants (IV): D6973 - latest)
To find similar documents by classification:
75.160.20 (Liquid fuels Including gasoline, diesel, kerosene, etc.)
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Document Number
ASTM-D7422-14a
Revision Level
2014A EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Oct. 15, 2014
Document Type
Test Method
Page Count
38 pages
Committee Number
D02.B0