How to maintain a used car? What are the maintenance programs?

First, regular replacement of oil and oil filters
Oil and oil filter is an important part to ensure the normal operation of the engine, the role of the oil is to lubricate, cool, clean and seal the internal parts of the engine, the role of the oil filter is to filter the impurities and dirt in the oil, keep the oil clean. If the oil and oil filter are used for too long, it will lead to oil deterioration, blackening, thinning, oil filter clogging, failure, thus affecting the lubrication effect of the engine, increasing engine wear and fuel consumption, and even cause engine failure. Therefore, regular replacement of oil and oil filter is the basic project of maintenance of used cars, generally recommended that every 5,000 kilometers or half a year or so, you have to change the oil and oil filter, choose the right brand and model of oil, and replace it in accordance with the manufacturer’s regulations, don’t be greedy for cheaper or delayed, or it will cause irreversible damage to the engine.

Second, regular replacement of air filters and air conditioning filters
Air filter and air conditioning filter is to ensure the quality of air inside the car is an important part of the air filter’s role is to filter the air into the engine dust and impurities, to keep the air clean, improve the combustion efficiency of the engine, air conditioning filter’s role is to filter the air into the car in the dust and odors, to maintain the comfort of the car to prevent the growth of bacteria and mold. If the air filter and air conditioning filter are used for too long, it will lead to air filter clogging and failure, air conditioning filter dirty and moldy, which will affect the power of the vehicle and the hygiene of the interior, increase fuel consumption and emissions, and even cause respiratory diseases. Therefore, regular replacement of air filters and air conditioning filters is the basic project of maintenance of used cars, it is generally recommended that every 10,000 kilometers or a year or so, it is necessary to replace the air filter and air conditioning filter, choose the appropriate filter brand and model, in accordance with the manufacturer’s regulations for replacement, do not ignore or delay, or else it will have an adverse effect on the vehicle and the human body.

Regular check of spark plugs and ignition coils
Spark plugs and ignition coils are important parts to ensure engine ignition, the role of spark plugs is to produce sparks in the combustion chamber of the engine to ignite the mixture, and the role of ignition coils is to provide high-voltage current to the spark plugs. If the spark plugs and ignition coils are used for too long, it will lead to carbon deposits on the spark plugs, wear and tear on the electrodes, and aging and fracture of the ignition coils, thus affecting the ignition effect of the engine, reducing the power and stability of the engine, increasing the fuel consumption and emissions, and even triggering the engine jittering, stalling, and vibration and other faults. Therefore, regular inspection of spark plugs and ignition coils is the basic project of maintenance of used cars, it is generally recommended that every 30,000 kilometers or two years or so, we should check the spark plugs and ignition coils, if found to have carbon deposits, wear and tear, aging, fracture, etc., we must replace them in a timely manner, choose the right brand and model of spark plugs and ignition coils, and replace them in accordance with the manufacturer’s regulations, don’t wait until there is a failure to deal with, otherwise, it will cause serious damage to the engine. treatment, otherwise it will cause serious damage to the engine.

Fifth, regular cleaning of the body and interior
Cleaning the body and interior is an important item to keep the vehicle beautiful and hygienic, the role of the body is to protect the internal structure of the vehicle, and the role of the interior is to provide the driving and riding space of the vehicle. If the body and interior are used for too long, it will lead to the accumulation of dust, scratches, fading color of the body, and the accumulation of dirt, odor, and bacteria inside the vehicle, thus affecting the appearance and comfort of the vehicle, lowering the grade and value of the vehicle, and even triggering corrosion of the vehicle and human disease. Therefore, regular cleaning of the body and interior is the basic project of maintenance of used cars, it is generally recommended that every 1,000 kilometers or a month or so, we must clean the body and interior, choose the appropriate cleaning tools and cleaning agents, in accordance with the correct cleaning method, do not use the inappropriate cleaning tools and cleaning agents, or use the incorrect cleaning method for cleaning, otherwise it will cause adverse effects on the vehicle and the human body. Adverse effects.