Three major maintenance mistakes of automotive bolts, belts and oil

Whether it is for old drivers or novice drivers, car maintenance can easily lead to errors due to empiricism or dogmatism, so that accidents occur when the car is running or maintenance is not satisfactory. In fact, for the owner, maintenance of the three parts of the bolt, belt, and oil still need to be careful, so as not to enter the maintenance mistakes.

Mistakes The tighter the bolt, the better. There are many fasteners on the car that are connected with bolts and nuts, and it should be ensured that they have sufficient preload, but they cannot be tightened too tightly. If the tightening is too tight, the bolts and connectors will be permanently deformed, the pre-tightening force will drop, and even cause slipping or breaking.

Mistakes 2 The tighter the drive belt, the better. If the belt is over-tightened, it is easily deformed by stretching, and the pulleys and bearings are liable to cause bending and damage.

Mistakes The more oil the better. If there is too much oil, the crankshaft shank and connecting rod will stir violently when the engine is working, which not only increases the internal power loss of the engine, but also causes oil breakdown due to the increase of oil splashed on the cylinder wall.

In addition, when going to a maintenance point or a 4S shop for maintenance, the owner still chooses the maintenance master who knows his/her car model as much as possible, so that the time for repetitive inspections can be avoided and wrong judgments caused by unfamiliarity can be avoided. Of course, the master who is exposed to a car for a long period of time may also experience some errors based on experience, but overall the more familiar maintenance masters still outweigh the disadvantages.