1.1本试验方法涵盖了评估柴油机油性能特性的发动机试验程序，包括铅腐蚀和活塞环和缸套的磨损。该试验方法通常称为Mack T-9。 1.2以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 具体安全注意事项见附录A5。 ====意义和用途====== 本试验方法旨在评估涡轮增压和中冷四缸发动机机油的磨损性能- 循环柴油发动机。从测试前后的旧油分析和部件测量中获得结果。 当遵循程序的所有细节时，试验方法可用于发动机机油规格验收。

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. This test method is commonly referred to as the Mack T-9. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 A5 for specific safety precautions. ====== Significance And Use ====== This test method was developed to evaluate the wear performance of engine oils in turbocharged and intercooled four-cycle diesel engines. Obtain results from used oil analysis and component measurements before and after test. The test method may be used for engine oil specification acceptance when all details of the procedure are followed.