What are the items that must be done in car maintenance?

When the car reaches 5,000 or 10,000 kilometers, it needs maintenance. This kind of maintenance usually involves changing the engine oil, changing the oil filter element, and then lifting the vehicle to check the chassis. This is called minor maintenance. However, the car will undergo major maintenance between 40,000 and 60,000 kilometers. Major maintenance involves a lot of content. What specific items need maintenance? What is the maintenance mileage? Which parts can be replaced and which parts can be left alone? Let me summarize it for you today.

The first step is to check the engine compartment and check the engine oil. Anyone who drives a car knows that engine oil definitely needs maintenance. Next, check the oil in key parts. When the car has a mileage of 40,000 to 60,000 kilometers, check the transmission oil. Different transmissions have different replacement mileage. For example, CVT transmissions, it is recommended that you consider changing the oil for the first time after 60,000 kilometers. AT dual-clutch and the like can travel 100,000 kilometers without any problems.

Check the brake fluid. Use a brake fluid moisture content test pen and put it into the brake fluid to detect the moisture content. If it does not exceed the standard, the brake fluid does not need to be changed.

Check the power steering fluid. If the oil is obviously dirty, you can replace the power steering oil. If the power steering oil is still relatively clear, there is no need to change it.

Check the antifreeze. If the antifreeze comes with the original car, there will basically be no problem if it is used for five or six years. If the color is relatively pure, there will be no big problem. If the color is turbid, especially if it has a color similar to rust, it is recommended that you replace it.

The second step is to check the intake system and combustion system. Check the air filter element, it is recommended to replace it about 10,000 kilometers. Depending on the driving environment, if the air quality is relatively good, the replacement mileage may be longer. If the car usage environment is relatively poor, such as construction sites that are often dusty, the replacement mileage will be shorter.

Check the throttle. Follow the pipe of the air intake system and see the metal valve throttle. If the car has 50,000 to 60,000 kilometers, the fuel consumption is normal and there is no abnormal vibration, the throttle valve can be removed or not. If the fuel consumption is a bit high or the car is shaking, you can remove the throttle and wash it. The cleaning cost is only a few dozen yuan. After washing, the air intake will be slightly better.

Check the spark plug. In addition to engine oil, there is also a very important consumable part that needs to be replaced in the engine combustion system, which is the spark plug. For most self-priming cars, the original spark plugs can basically last 100,000 kilometers. If it is a turbocharged car, the spark plugs may need to be replaced after 40,000 to 60,000 kilometers. The working conditions of the car are different, so you need to judge according to your own car model. If you really can't judge, you can ask the master to remove the spark plug and visually inspect the degree of corrosion of the spark plug to judge whether the spark plug needs to be replaced.

The third step is to check the tires and brake system. After understanding the inspection items of the engine compartment, Brother Miao will show you the very important inspection items during maintenance. If the tires have low mileage but the car is 6 or 7 years old, although the tread pattern still looks very good, the rubber of the tires has denatured and is already very hard. It is recommended that you consider replacing the tires. If the time is relatively short, as long as you don't often drift or steer in place, the tire pattern is basically relatively good and has not been worn to the limit, so the tire can continue to be used.

Check the brakes. When the car has a mileage of 40,000 to 60,000 kilometers, many friends need to replace the brake pads because the brake pads wear out more. Check the thickness of the brake pads. You can tell with the naked eye that Miao Ge's brake pads are still relatively thick. If the thickness is not enough, replace the brake pads immediately.

Check the brake disc. The wear of the brake disc is relatively normal, there are very few grooves, and there are no obvious deep grooves by touching it with your hands, so you can continue to use it.

The fourth step is to lift the car and check the fuel filter element. The gasoline filter element of some cars is integrated and installed in the fuel tank. This kind of gasoline filter element can basically be replaced every 100,000 kilometers as long as it is not refueled messily.

There is a kind of gasoline filter element that is installed under the chassis. It is a small round cylindrical thing. This kind of external filter element can basically be considered for replacement after 40,000 to 60,000 kilometers.

Step 5: After lifting the car, check the inner surfaces of the four tires under the chassis to see if they are damaged or scratched. Then, check whether the tires are running off track. If the tires are wearing off or running off track, it is recommended to do a four-wheel alignment. If not, there is no need to do a four-wheel alignment. Check the half-shaft rubber sleeves, especially the rubber parts, for oil seepage or oil leakage. If the rubber parts are damaged, they need to be replaced in time.

The sixth step is to check the air conditioning system. Take out the air-conditioning filter element and check it. Since the air quality in many places is not very good now, it is recommended to use foam cleaning agent to clean the air-conditioning system a little. When using the car, the air quality inside the car will be better.

Finally, I would like to remind everyone that many friends tend to overlook skylights. When the car has a mileage of 40,000 to 60,000 kilometers, it is recommended that you clear the drainage holes at the four corners of the sunroof, apply some oil to the track of the sunroof, and clean and maintain the dirt.

The above is a summary for everyone. Items that need to be done for major car maintenance, which ones need to be replaced, and which ones just need to be checked, depending on the situation.