Is it necessary to overhaul the car?

Speaking of car maintenance, in fact, many car owners have been misled. They think that when the vehicle travels to 60,000 ~ 80,000 km, in addition to the three filters of engine oil, other brake oil, steering oil, gearbox oil, antifreeze, spark plugs, timing belts, etc. It has to be replaced, even the throttle valve, fuel injector and carbon deposit in the combustion chamber have to be cleaned. However, this so-called car maintenance is not rigorous. Some 4S shops or large repair shops will integrate these maintenance projects and ask you to do all these to earn more money.

But this is really unnecessary, because there is no manufacturer of that car, and they will ask for major maintenance in the user manual. As long as friends change the oil filter regularly and use genuine oil with better quality, they don't have to worry about the rest, and they don't need to change or clean together. For this major maintenance, we will decide whether to replace it after passing the test. For example, this brake oil and directional oil can be replaced after 6 years and 80,000 kilometers.

If the transmission oil is automatic, whether you are AT, CVT or wet dual clutch, you should change it every 80,000 kilometers. You can change the oil by gravity or by circulating machine, but remember to change the oil filter at the same time. If it is an ordinary family car, you can change the manual transmission oil over 65438+ 10,000 kilometers, and it is best to change the pickup truck or truck before 80,000 kilometers.

If the antifreeze of the original car has not been changed, it should be checked and replaced for about 6 years and 80 thousand kilometers. If it is not particularly dirty, it can be extended for a period of time, especially for some models such as Honda and Hyundai. Many original cars use long-acting antifreeze, and the manufacturer suggests that 10 should be replaced only after driving 200,000 kilometers. It belongs to long-acting antifreeze, so it is unnecessary to replace it too early.

The spark plugs of each model have different materials and need to be separated. Ordinary nickel alloy spark plug, it is recommended that friends check and replace it 60 thousand kilometers. If it is iridium and platinum, 80,000 ~ 654.38+ 10,000 kilometers can be replaced.

The synchronous belt is generally around 654.38+ 10,000 kilometers. If you check and replace it, there is no problem. The timing chain can be ignored directly, and it does not need to be replaced without abnormal sound.

There are others, such as tires, brake pads, brake discs, generator belts and so on. , do not need to be replaced regularly. When using the car at ordinary times, just pay attention to the inspection. As long as there is no aging, cracking and serious wear, there is no hurry to replace it.

As for cleaning the engine throttle, three-way catalysis, etc. It is even more unnecessary to do it unless the car has problems such as unstable idle speed and difficult starting, because these are maintenance methods, not maintenance items, and frequent cleaning will cause bad effects.

Therefore, there is no need to carry out the so-called big maintenance on a regular basis, which is the routine of this 4S shop or large repair shop.