Matters needing attention
The following is the wrong maintenance method of 12 for your reference.
Wash the car in the sun-damage the paint.
Many private car owners like to wash their cars in the sun, thinking that the water on their bodies will be dry soon after washing. It's actually wrong. When washing a car in the sun, the convex lens effect formed by water will cause local high temperature on the top of the car paint, and the car paint will lose its luster after a long time. If you wax at this time, it is easy to cause uneven color of the car body.
Therefore, it is best to wash the car and wax it under cover. If you can't guarantee it, you'd better choose cloudy or sunny morning and evening.
Washing a car is like taking a bath-it's bad for air conditioning.
The weather temperature rises, the dust increases, the car body is easy to get dirty, and the frequency of car washing by car owners begins to increase. Many car owners also want to wash their cars as thoroughly as they bathe themselves. However, it should be noted here that the appearance of automobile air conditioners must be kept dry. If the car air conditioner is accidentally wet, it will affect the life of the car air conditioner.
Waxing ring-not effective
Many people are used to waxing and circling the car body, which is not the right method. The correct way of waxing is to do it in a straight line, alternating vertically and horizontally, and then take the last line along the direction of rainwater flow, which can reduce the concentric rings on the surface of car paint.
Too much oil.-something's wrong.
When the amount of oil in the engine oil pan is insufficient, the friction between the bearing and the journal will be poorly lubricated due to the lack of oil, which will aggravate the degree of wear and even lead to the accident of burning the bearing shaft.
However, if there is too much oil, when the engine is working, the crank and the big end of the connecting rod will stir violently, which will not only increase the internal power loss of the engine, but also increase the amount of oil splashed on the cylinder wall, leading to the failure of engine oil combustion. Therefore, it is best to control the oil in the oil pan between the upper and lower notches of the dipstick.
Bolt overtightening-permanent deformation
There are many fasteners connected by bolts and nuts in automobiles, so it is necessary to ensure sufficient pre-tightening force, but not too tight. If it is tightened too tightly, on the one hand, the connector will be permanently deformed under the action of external force; On the other hand, the bolt will be permanently deformed due to stretching, the pre-tightening force will be reduced, and even it will slip or break.
Baidu encyclopedia-car body maintenance