When the engine is not running, adequate lubrication of the transmission is not guaranteed. 发动机不运转时,无法保证变速器能够得到充分润滑。
Selecting oil is primarily based on the viscosity required to provide adequate lubrication for the bearing at the bearing operating temperature. 选择润滑油时,主要以正常工作温度下为轴承提供充分润滑所需的粘度为基础。