市场上出售的内燃机机油,大都是按照API(美国石油学会英文缩写)分类的,许多发动机说明书也要求使用API分类的内燃机机油。因此正确识别API分类内燃机机油,对于使用好发动机显得尤为重要。下面简单介绍API机油的分类及其使用,供摩友们参考。 一、性能分类 按照API分类,汽油机机油分SA、SB、SC、SD、SE、SF等几个等级,其中S表示汽油机机油(国内用 Most of the engine oil sold on the market is classified according to the API (American Petroleum Institute English abbreviation), and many engine specifications also require the use of API classified engine oil. Therefore, the correct identification of API classification engine oil, for the use of a good engine is particularly important. Here is a brief introduction to the classification of API oil and its use, for Mount Friends reference. First, the performance classification According to API classification, gasoline engine oil SA, SB, SC, SD, SE, SF and several other grades, where S said gasoline engine oil (domestic