Corolla is 50,000 kilometers long. What maintenance must be done? Why?

As a good joint venture brand, Toyota Corolla has good engine performance and gearbox. For Toyota Corolla, which has run for 50,000 kilometers, the maintenance items that must be done are oil replacement, gearbox oil replacement and car throttle cleaning, because these maintenance items directly determine the performance parameters of the car. If it is not maintained, the working condition of the car will get worse and worse, and even the car will be scrapped directly.

First, change the engine oil.

An engine is like a human heart. If a car has no engine, it means that it has no power, so the car will not run normally on the road. For the Corolla car, it has traveled 50,000 kilometers, so it needs to change the oil, because the oil can effectively protect the inner cylinder of the engine, and the viscosity effect of the oil will become worse and worse during long-term driving. At the same time, the oil is doped with many impurities, which will cause the engine cylinder to wear, so the car owners and friends must change the oil according to the regulations. Second, change the transmission oil

For oil, the same is true for changing transmission oil. There are many gear keys in the gearbox. In order to reduce the friction between gear keys, transmission oil is put in to reduce wear. After the car travels 50,000 kilometers, the same gearbox oil will produce a lot of impurities, which will increase the friction of gear parts in the gearbox. At this time, it is necessary to replace the gearbox oil. Therefore, car owners often report that if the gearbox oil is not changed, the gear of the car will be frustrated. Third, clean the accelerator of the car.

The throttle valve is located at the air intake of the engine. Throttle is very important to the engine. If there is too much carbon in the throttle, the fuel consumption of the engine will increase and the power will be weakened. Therefore, after the car has traveled for 50,000 kilometers, you must remember to clean up the carbon deposit inside the throttle, so as to ensure that the power system of the car will not be damaged. Generally speaking, the maintenance items of Corolla after running 50,000 kilometers are engine and gearbox oil, and the accelerator of the car should be cleaned at the same time.