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. TEOST Turbo的范围和适用性 2. 根据实验室间研究得出的试验方法约为5 mg至90 毫克。然而，经验表明，存款水平高达150 可以获得mg或更大。 1.2 本试验方法使用可追溯至制造商的专利仪器、方法和专利、编号和注册的沉积棒 4. 并专门针对实践和精度制定了测试方法。 1.3 以国际单位制表示的数值应视为标准值。 本标准不包括其他计量单位。 1.3.1 毫克（mg）、克（g）、毫升（mL）和升（L）是提供的单位，因为它们是行业公认的标准。 1.4 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、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====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 The range and applicability of the TEOST Turbo 2 test method as derived from an interlaboratory study is approximately 5 mg to 90 mg. However, experience indicates that deposit levels of up to 150 mg or greater can be obtained. 1.2 This test method uses a patented instrument, method and patented, numbered, and registered depositor rods traceable to the manufacturer 4 and made specifically for the practice and precision of the test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3.1 Milligrams (mg), grams (g), milliliters (mL), and liters (L) are the units provided because they are an industry accepted standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The test method is designed to predict the elevated 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.