长途行驶的机动车辆，在行驶途中或维修保养时，都需要添加、更换燃油或润滑油。驾驶员在加油时，一般都是用嘴吸出再进行抽放油。这种方式有如下缺点：一是驾驶员用嘴吸油时，稍有不慎就会将其吸入体内，对健康有害；二是浪费油料，每次吸入口中或被排放掉的油料达0．2～Ikg； Long-distance motor vehicles, on the road or maintenance, you need to add, replace the fuel or lubricating oil. When the driver is refueling, they are usually sucked out of the mouth to drain the oil. This approach has the following disadvantages: First, the driver mouth oil, a little carelessly will be inhaled into the body, harmful to health; the second is to waste oil, each inhalation or discharge of oil up to 0.2 ~ Ikg;