汽车发动机是为汽车提供动力的发动机,是汽车的心脏。要让汽车使用寿命延长,发动机起到关键性的作用,因此如何保养发动机成了其中最为重要的方法。工作实践证明,正确使用润滑油是保养发动机的基本手段,不仅可以延长汽车发动机寿命,还能减少油耗。本文通过对润滑机油作用的分析,论证正确使用润滑机油是养护汽车发动机不可缺少的一环。 The car engine is the engine that powers the car and is the heart of the car. To make the car longer, the engine plays a key role, so how to maintain the engine has become one of the most important method. Practice has proved that the proper use of lubricating oil is the basic means of maintenance of the engine, not only to extend the life of the car engine, but also reduce fuel consumption. This article through the analysis of the role of lubricating oil, demonstrate the correct use of lubricating oil is an essential part of conservation automobile engine.