1.1本规程涵盖了评估乘用车和轻型卡车服务中发动机冷却液的防腐和性能的程序。 注1-车辆服务中的冷却剂评估可能需要相当长的时间和费用；因此，应在实验室对产品进行预测试，以确保其普遍可接受性。测试可能会有所不同，从小型的、严格控制的测试到大型测试，在这些测试中，严格控制并不总是可行的。 1.2本规程中引用的单位应视为标准。括号中给出的值是近似等效值，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。 第7节和注释A1.1中给出了具体的预防说明。 ====意义和用途====== 使用本规程获得的数据将为评估乘用车和轻型卡车服务中的冷却液性能提供依据。 获得的数据也可用于为从模拟服务和发动机测功机测试中获得的数据提供额外的意义。

1.1 This practice covers the procedure for evaluating corrosion protection and performance of an engine coolant in passenger car and light truck service. Note 1—Coolant evaluation in vehicle service may require considerable time and expense; therefore, the product should be pretested in the laboratory for general acceptability. Tests may vary from small, closely controlled tests, to large tests where close control is not always practical. 1.2 The units quoted in this practice are to be regarded as standard. The values given in parentheses are approximate equivalents 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. Specific precautionary statements are given in Section 7 and Note A1.1. ====== Significance And Use ====== The data obtained from the use of this practice will provide a basis for the evaluation of coolant performance in passenger car and light truck service. The data obtained may also be used to provide added significance to the data obtained from simulated service and engine dynamometer tests.