How often should Audi q5 antifreeze be changed? How to change Audi q5 antifreeze?

How often does Audi q5 antifreeze change? Most family cars are replaced every two years or ten thousand kilometers. Of course, this reference replacement cycle can be changed according to the actual use. Because of the problem of driving 20 million kilometers or extending the half-life service life, if the vehicle strength is used, it can be replaced in advance. If the maximum scale value of antifreeze coolant is found before replacement (the normal capacity of antifreeze coolant should be between MINMAX), it will increase in time, which will affect the cooling efficiency of the engine. It should be noted that some antifreeze coolants need to be mixed with water in proportion to be effective. Some car owners bought it and used it directly without reading the instructions, which eventually led to the engine boiling. Therefore, before buying any antifreeze coolant, please read the instructions to ensure that nothing is wrong. How to change Audi q5 antifreeze? 1, warm the car first and then cool it for about an hour. Never start your homework just after the engine is turned off. Not too hot to kill! Even if the fire is turned off for a long time, prepare a pair of rubber gloves to wear. Safety first, one is to prevent burns, and the other is to avoid contact with toxic ethylene glycol antifreeze! 2. First, drain the antifreeze in the antifreeze expansion tank. I found it really dirty. When I sucked into the bottom slot, I found that the suction port was all black like mud, and it was black when I rubbed it on the gauze. I don't know if it's dirt, rust or metal fragments. Seeing this, I know my lessons have not been in vain! It is necessary to change antifreeze. 3. Then connect the negative pressure device with the car. Open two water outlet pipes at the front and rear of the expansion pot. First, drain the outlet pipe of the water tank and step on the negative pressure device for about ten times. When the negative pressure is enough, the antifreeze will come out continuously. Then pump the heater and return pipe. A * * * took out about three liters of antifreeze. About half in the front and half in the back. 4. This picture shows two return pipe before and after anti-freezing. This is the heater on the top, return pipe, in the back. This is the front water tank, return pipe. This kind of pipe is easy to open. Open the metal buckle with the front needle-nosed pliers and pull it out. But also has good compatibility with other connecting pipes. The operation is simple, so DIY changing antifreeze is the easiest way! 5. The antifreeze is basically drained. After the expansion pot is cleaned, you can put a funnel on the filler and pour in new antifreeze. The reason is that the edge of antifreeze filling port is where the relief valve overflows. If you accidentally fall into the outer ring, antifreeze will flow out. 6. After adding antifreeze between MAX and MIN, pump back the water pipe with negative pressure until the water comes out and the air is almost exhausted. Then warm up the car for five to ten minutes, warm up and come on. You will find that the liquid level of the antifreeze scale changes, rising to MAX for a while, falling to the middle for a while, then rising again and then falling back. After about three rounds, the air was basically clean. Leave the lid of the expansion pot open all night to see if it will fall off tomorrow.