Thus there is no need to turn off the engine when you need to stop the wheels from moving. In addition, the
A #lubricant is a substance, usually organic, introduced to reduce #friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces..
Static friction keeps this machine steady , static friction usually bigger than kinetic friction , so when it loses friction the kinetic friction can not stop the movement at the same circumstances