求翻译：2．车上各类紧固螺母都需按规定的扭矩拧紧。过松压不紧衬垫会渗漏；过紧又会使螺孔周围金属凸起或将丝扣拧滑而引起漏油。另外，油底壳放油螺塞若未拧紧或回松脱落，容易造成机油流失，继而发生“烧瓦抱轴”的机损事故。是什么意思？

2. Vehicles are required by the provisions of the various types of fastening nut torque tighten. Too loose loose gasket leakage; too tight, your metal around the hole raised or sliding the thread twists caused by oil spills. In addition, oil sump oil drain screw not tightened or loose particles from the easily lead to loss of engine oil, followed by "Bush burning axle" engine damage.