1.1 本试验方法涵盖了利用热氧化发动机油模拟试验（TEOST）确定汽车发动机油形成的沉积物量的程序 2. ). 3. 实验室间研究（见第节 17 )已确定其适用范围为10 mg至65 mg总沉积物。 注1: 该试验方法的运行经验表明，该试验方法适用于沉积物在2 mg至180 mg总沉积物。 1.2 以国际单位制表示的数值应视为标准值。 1.2.1 毫克（mg）、克（g）、毫升（mL）和升是提供的单位，因为它们是行业公认的标准。 1.2.2 例外情况- 磅/平方英寸表压（psig）仅供参考 6.2 . 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。 ====意义和用途====== 4.1 该测试方法旨在预测受涡轮增压器附加氧化应力影响的发动机机油的高温沉积物形成趋势。该测试方法可用于筛选油样或作为质量保证工具。

1.1 This test method covers the procedure to determine the amount of deposits formed by automotive engine oils utilizing the thermo-oxidation engine oil simulation test (TEOST 2 ). 3 An interlaboratory study (see Section 17 ) has determined it to be applicable over the range from 10 mg to 65 mg total deposits. Note 1: Operational experience with the test method has shown the test method to be applicable to engine oils having deposits over the range from 2 mg to 180 mg total deposits. 1.2 The values stated in SI units are to be regarded as standard. 1.2.1 Milligrams (mg), grams (g), milliliters (mL), and liters are the units provided, because they are an industry accepted standard. 1.2.2 Exception— Pounds per square inch gauge (psig) is provided for information only in 6.2 . 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. ====== Significance And Use ====== 4.1 The test method is designed to predict the high temperature deposit forming tendencies of an engine oil subject to the added oxidizing stress of a turbocharger. This test method can be used to screen oil samples or as a quality assurance tool.