摘要
在选择润滑油时，有必要了解机油的种类，如平常所说的合成油、传统矿物油或半合成油。机油大体分为单级机油和复级机油2大类。
It is vital to the life of engine when selecting and using lubricating oil.The correct usage and right selection of lubricating oil will effectively extend the useful life of the engine.The article introduced a few of tips when selecting and using lubricating oil.
出处
《商用汽车》
2009年第1期120-121,共2页
Commercial Vehicle
