Car chassis drag bottom, foreign body impact chassis

The speed of domestic road construction is very fast, the road that has just been repaired today will be "gutted" again tomorrow, and when the road is repaired in most cases, there will be more big stones or potholes. At this time, when our car is driving to such a road, it will let the big stones or other road protruding objects have close contact with the chassis of our vehicle. It's what we call a drag.
Due to the uncertainty of this situation, it is easy to cause damage to the parts located in the chassis, such as: the three-way catalyst shell is broken, the engine oil pan cracks, the gearbox housing cracks or the suspension system deformation, etc., the occurrence of these problems will bring fatal damage to your car.
corrosion
With the deteriorating environment, even the rain is acid rain, and in such an environment our car may increase the possibility of damage. Because the chassis is often in contact with sewage, greasy and other substances, and the chemical composition of these substances will slowly corrod the chassis and the parts on the chassis, so we should pay more attention to the anti-corrosion of the chassis.
In addition to the danger of corrosion of the chassis from the rain and sludge just mentioned, the melting agent used to melt snow in winter and the sea water can corrode our chassis, especially the sea water, if you drive your car to the sea, you must not drive the car into the sea, the corrosion of the sea water to the chassis will be very strong. If you do not pay attention to the chassis in contact with seawater, please use a large amount of fresh water or neutral cleaning agent to wash the chassis as soon as possible.