四、摩托车汽油机润滑油的选用 摩托车汽油机润滑油选用有两个原则:一是要考虑粘度级别,二是要考虑质量级别,两者缺一不可。 1.粘度级别的选择 对四冲程汽油机而言,粘度的选择要根据发动机工作的温度及发动机的热负荷来确定,以保证低温顺利启动及高温状态下摩擦面保持适当的油膜。环境温 Fourth, the choice of motorcycle gasoline engine oil Motorcycle engine lubricating oil selection has two principles: First, to consider the viscosity level, the second is to consider the quality level, both indispensable. 1. The choice of viscosity level For four-stroke gasoline engine, the choice of viscosity should be based on the engine operating temperature and engine heat load to determine, to ensure smooth start and low temperatures under high temperature friction surface to maintain the appropriate oil film. Ambient temperature