During the Fengshen C-position Service Experience Day on Thursday, go to the Fengshen 4S store for routine maintenance and experience the feeling of a C-position Service Day. The after-sales service staff member Zuo, who had been reviewing my Fengshen AX7 for three years, suggested that I replace the coolant and brake fluid, and patiently taught me the importance of replacing the coolant. The main purpose of replacing the antifreeze is to protect the components of the cooling system from corrosion, prevent scale, avoid reducing the heat dissipation effect of the radiator, avoid lowering the freezing point of the antifreeze, and ensure that the engine can work normally within the normal temperature range. The summer worker doing maintenance began to change the coolant after changing the oil. The first is to inspect the pipeline to observe whether there are any traces of leaks and cracks in the pipeline. The five-way water pipe is inspected. The five-way water pipe is named because it has five interfaces connecting various parts. After the antifreeze flows through the five-way pipe, it is distributed to different parts of the car to play a role. Then drain water to release the old antifreeze, and then clean the liquid channel with clean water. Add clear water to the antifreeze replenishment tank to flow continuously through the engine cooling system. Then drive the car idle for 3 to 5 minutes to allow the water to cycle, and finally drain the water. Then there is a new coolant. About 1 hour after draining water, add new antifreeze from the water pipe of the water tank. This is a way to let the antifreeze flow into the water tank quickly. Then add the antifreeze to the antifreeze tank and drive for about 10 minutes. At this time, the cooling system removes some air and the liquid level drops. Then add the antifreeze to the tank and fill the highest mark “MAXT” until. It was the first time to change the coolant. From a Xiaobai who didn’t understand cars, he had an understanding of the performance and maintenance of the car. Thanks to Xia Gong for his patient guidance. Dongfeng Fengshen’s C-position service on Thursday was really good, improving the quality of customer service and worthy of praise!