【Car owner's car knowledge】Now more and more private car owners, everyone hopes to drive their car for a long time and reduce maintenance costs. To do this, you must learn to maintain your car scientifically. After buying a car, many car owners hope that it can be kept as new, but often we use the wrong method because of the lack of understanding of the maintenance method, which will not only fail to maintain the car, but will cause damage to it. damage. Here, I will introduce ten common wrong maintenance methods. Car owners can refer to the comparison to see if they are destroying the car unknowingly.
1. Too much oil is prone to failure
Many new car owners do not know much about cars and always think that it is a good thing to fill up the oil. This is a common problem of many car owners. In fact, adding too much oil can actually hurt the car. Because in order to ensure the benign smoothness of the bearing and the journal, the car needs oil to act as the lubricant, otherwise it will increase the wear and even cause the burning of the bearing shaft, which will easily increase the running resistance of each mechanism; however, if there is too much oil , When the engine is working, the crankshaft handle and the big end of the connecting rod will produce violent agitation, which not only increases the internal power loss of the engine, but also increases the amount of oil splashed on the cylinder wall, resulting in the failure of burning and draining the oil. Therefore, the oil in the engine oil pan should be controlled between the upper and lower lines of the oil dipstick.
Second, the bolts are too tight resulting in permanent deformation
There are many fasteners connected with bolts and nuts on the car, and it should be ensured that they have sufficient pre-tightening force, but they should not be over-tightened. If it is over-tightened, on the one hand, the connector will be permanently deformed under the action of external force; on the other hand, the bolt will be stretched and permanently deformed, and the pre-tightening force will decrease, even causing slip or breakage.
Third, the circular waxing effect is poor
Car waxing is an important item in car care and beauty, and has been concerned and accepted by more and more car owners and friends. The purpose of car waxing is not only to make your car look bright and fresh, but also to protect the paint. Many people habitually do it in circles for body waxing, which is not the right way. The correct waxing method is a straight line, alternating horizontal and vertical lines, and then the last one in the direction of the rainwater flow, so as to achieve the effect of reducing the concentric halo on the paint surface.
In addition, we must master the frequency of waxing. Due to the different driving environments and parking places, the time interval for waxing should also be different. Generally, there is a garage for parking, and most vehicles driving on good roads should be waxed every 2 to 3 months; vehicles parked in the open air, due to wind and rain, it is best to wax every 1 to 2 months. Of course, this is not a hard and fast rule. Generally, when the body feels unsmooth by hand, it can be waxed again.
Fourth, washing the car under the hot sun will damage the car paint
Many car owners like to wash the car in the hot sun, thinking that the water on the car body can be dried quickly after washing. In fact, it is wrong. The car washing must also choose the right time. After the vehicle is exposed to the sun, the metal plate and the paint surface of the vehicle will expand when heated. When washing the car at this time, one heat and one cold will make the paint surface brittle and crack, and then the color gloss will darken. In addition, the car wash on a hot day will also cause the residual water on the car body to form a convex lens under the sun, which will make the car body high temperature locally, causing the paint surface to lose its luster. If waxing at this time, it is easy to cause uneven color of the car body. Therefore, car washing and waxing are best carried out under sheltered conditions. If there is no guarantee, it is best to choose it in the morning and evening on a cloudy or sunny day.
5. Excessive car washing will damage the air conditioner
In summer, the temperature rises, the dust increases, the body is easy to get dirty, and the frequency of car washing by car owners also begins to rise. Many car owners also hope to wash their cars as thoroughly as they wash themselves. However, it should be noted here that the appearance of the car air conditioner must be kept dry. If the car air conditioner is accidentally wet, it will affect the life of the car air conditioner.
Regarding the frequency of car washing, experts believe that, under normal circumstances, it is best to wash the car 1 to 2 times a week. It is not advisable to wash the car too frequently. For general floating dust, use a feather duster or a soft mop to clean it up. Because frequent car washing will accelerate paint oxidation. When washing the car, use clean water that does not contain harmful impurities such as sediment, oil, acid and alkali, and soak the surface of the car body for a period of time to soften the soil, adherent flying insects and other attachments. Do not try to scrape them off. . In addition, after washing the car, carefully wipe the hood hinge, the root of the wiper, the ends of the glass seal and other places where dirt is easy to accumulate.
6. The fan belt is too tight, resulting in a large bearing load
In summer, the temperature is too high. Some drivers think that increasing the tightness of the fan belt can improve the cooling effect of the engine, so they keep increasing the tightness of the fan belt, causing the fan belt to be too tight, but this is wrong. The fan belt should be properly tightened, because over-tightening will make the bearing load too large, aggravate wear, increase power consumption, and also bend the water pump shaft, elongate and deform the belt, and shorten its life.
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