The regular maintenance of a car is very important for a car, which is related to the decay speed of the car condition, whether it can drive safely or not, and even to the residual value of used cars. Generally speaking, it can be divided into minor maintenance and major maintenance.
Minor maintenance is mainly to replace engine lubricating oil, engine oil filter, air filter and air conditioner filter, in short, engine oil filter, engine filter, air filter and air conditioner filter. Because engine oil mainly plays the role of lubrication and cooling in the engine, impurities such as iron filings generated by piston movement of internal combustion engine will be mixed into the engine oil. The engine oil filter is equivalent to a sieve in the process of engine oil circulation, which can be understood as a "leaky spoon" often used in the kitchen. The mileage of changing oil and machine filter is different for different models, some are 5000 km, some are 7500 km, and some are 10000 km. Please refer to the automobile maintenance manual.
The air filter is easy to understand, which is equivalent to a "mask" worn on people's faces during the epidemic. Air must participate in the combustion process of internal combustion engine. Air must pass through the air filter before entering the cylinder of internal combustion engine, mainly to filter out dust and sundries in the air to prevent more impurities from being sucked into the cylinder to participate in combustion. There is too much dust or foreign matter in the air filter after the vehicle travels for a certain distance. At this time, it is necessary to replace the air filter to ensure that the air entering the cylinder is cleaner.
The air conditioning filter is also easy to understand. The air conditioning filters of most models are installed in the storage box in front of the co-pilot. Its main function is to filter impurities in the air entering the engine room and ensure that the air blown out from the air outlet of the air conditioner is clean.
As for major maintenance projects, they are relatively more expensive, and most models need to replace spark plugs, transmission oil, brake oil and antifreeze.
Spark plug is the key component of automobile ignition system, and timely and efficient ignition can ensure the normal operation and efficient combustion of the engine. When the mileage reaches a certain level, the spark plug needs to be replaced. According to electrode materials, it can be generally divided into nickel-copper alloy spark plugs, platinum spark plugs and iridium spark plugs, which are of good quality and expensive. The spark plug needs to be replaced for 30,000 km or 50,000 km of general models. Please refer to the maintenance manual for details.
The function of gearbox oil is similar to that of engine lubricating oil. On the one hand, it can lubricate and reduce friction resistance, on the other hand, it can cool the gearbox. When the mileage reaches a certain level, there are too many impurities in the gearbox oil, which will affect the normal operation of the gearbox. Therefore, the gearbox oil needs to be replaced after a certain number of kilometers, and the general model is about 60,000-80,000 kilometers. Please refer to the maintenance manual for details.
Brake oil also has a service life. Maintenance generally depends on whether the amount of brake oil is enough first, and then whether the brake oil has deteriorated. Failure to change the brake oil for a long time will reduce the braking force, thus endangering driving safety.
Antifreeze can be understood as human blood, and it also plays a very important role in the normal operation of internal combustion engines. On the one hand, observe whether the liquid level of antifreeze is between normal values, and on the other hand, detect whether the freezing point of antifreeze meets the requirements. If it is casually -30℃ in winter in Northeast China and the freezing point of your car antifreeze is only -20℃, the antifreeze will freeze in winter and even the engine will be scrapped.
In addition, car maintenance should also focus on checking the degree of brake pad wear, whether the spare tire leaks, whether the chassis rubber parts are aging, whether the shock absorber leaks oil, and so on!
In a word, it is very important to maintain the car on time. You must go to a 4S shop or a regular garage to maintain the car, so as to ensure that the car maintenance is in place and eliminate potential safety hazards in time.