错误使用黄油种种１．一些机手在安装活塞环时，为了不使环口错位，在各环槽内抹上黄油，将活塞环粘住。这种作法是错误的。因为当发动机工作时，黄油在高温下会形成胶状物，影响活塞环的弹力，大大降低其密封性能。另外黄油燃烧形成的积炭，会加剧气缸、活塞的磨损。２．... Incorrect use of butter. Some hands in the installation of the piston ring, in order not to dislocation of the ring, the ring groove in the butter, the piston ring stick. This is wrong. Because when the engine is working, butter at high temperatures will form a jelly, affecting the elastic ring piston, greatly reducing its sealing performance. In addition, the formation of carbon burning butter will aggravate the cylinder, the piston wear. 2. ...