How often should the car be overhauled?
The major maintenance of a car is simply to change all the oil and water in the car and wash the washable parts such as the throttle and nozzle. This is the so-called overhaul. Many 4S stores regularly require car owners to carry out major maintenance, but is it necessary to carry out major maintenance on cars and when?
At the beginning, I have simply told you about the items included in major maintenance, such as engine oil, transmission oil, brake oil and antifreeze, which need to be replaced in major maintenance. Some hydraulic power-assisted vehicles need to be replaced during major maintenance.
Throttle generally does not need cleaning, but since it is a major maintenance, it certainly needs cleaning. Some car brake pads are too worn and need to be replaced when it comes to major maintenance. Anyway, the oil and water in the car should be changed, the wearing parts should be changed, and the places to be inspected should be inspected. This is an overhaul.
Just like a person doing a physical examination, since the money for the physical examination has been spent, the items of filming, blood drawing and laboratory tests have to be done.
Maintenance cycle of automobile parts. Actually, the car is not that expensive. This car is bought for use. Although maintenance is essential, we should try to avoid excessive maintenance and waste money.
Like our physical examination, some necessary physical examinations should be done every year, but some unnecessary items can be checked every few years.
For example, the engine oil can be changed from 5000km to 7500km, and the fully synthetic engine can even be driven to 10000km. We should maintain the engine regularly according to the type of oil to avoid premature scrapping of the engine. Spark plugs are usually replaced every 40,000 kilometers, but I suggest that you check again when the replacement cycle is up. If the ignition effect is good, you can continue to use them.
Many coolants are long-lasting or even maintenance-free for life, and some models will be marked on the hood.
Even if it is a short-acting coolant, even in the replacement cycle, as long as it is enough, there is no need to change it in a hurry. Xi' an can always be used when the engine water temperature is not high, and then change it when you are in a good mood.
Brake oil and brake pads are the same. Many people may think that the brake system should not be sloppy, but there is no need to change the brake oil and brake pads in a hurry. Although the manufacturer suggests replacing it after 40,000 kilometers, as long as the fault code does not trip and the brakes are all normal, there is no need to waste money. Most major repairs cost money. In fact, major maintenance was the talk of some 4S stores in the past, with the aim of making money.
It is impossible to change all the oil and water at the same time in the daily car use. For example, the automatic transmission oil is usually changed once every 80,000 kilometers, but the brake oil is changed once every 40,000 kilometers. 40,000 kilometers can't be overhauled. Can we change transmission oil and brake oil together?
Just like children go to school, although they are in the same class, it is impossible for everyone to come to class together and be taken back together. The car must be in the process of using it, which part needs maintenance, and no major maintenance is needed.
Big maintenance is worth doing. Although most of the major maintenance I told you earlier is a waste of money, it is still necessary to do a major maintenance if it is a car with a long service life or a used car.
Because many parts of the car will have potential safety hazards when used for a long time, major maintenance can find and solve problems in time. Because I don't know how the former owner used the car, and I don't know whether the former owner loved the car, I went to do a major maintenance. As a result, when I was washing the throttle, I found two big fingernails on the throttle, and hard dust was stuck in the throttle. Fortunately, I found it in time, otherwise I would be sucked into the cylinder and pulled.
Some old cars that have been in operation for more than 10 years, most of them have been in operation for more than 10 million kilometers. A major maintenance, changing oil and water, and replacing some wearing parts can make our car in a better state and help to prolong its service life.
Besides, those cars that have only been in operation for six or seven years and the total mileage has not even reached 80 thousand kilometers really don't need any major maintenance. Sometimes the oil changed in major maintenance is not as good as the original one, but the money spent is not worth the candle.
Summary: major maintenance is necessary, but it should be done according to the car. As long as that part of the ordinary family car reaches the maintenance cycle, there is no need to change the oil all at once. Remember the standard maintenance cycle of all the components mentioned above in the user manual, and just do the maintenance according to the cycle, especially the oil, so as not to waste money.