In front of the front engine compartment. Passat water tank is located between the front lever of the vehicle and the engine. When the engine is hot on the water tank, it is forbidden to open the lid. Ordinary water (tap water, mineral water) can't be filled into the car water tank. It is necessary to fill the automobile engine coolant (no freezing at zero degree, no boiling at 100 degree), and the coolant will not produce scale, which can ensure the cleanliness of the engine waterway. The maintenance method of automobile water tank is as follows: 1. Stop and turn off the engine. When the temperature of the coolant drops, open the expansion pot and inject the tank cleaner into it.
2. Start the engine until the cooling fan works, and then idle for 5- 10 minutes;
3. Turn off the engine and remove the front bumper of the vehicle. When removing, make sure that all fixing screws have been unscrewed, and then slowly remove them from both ends to the middle. Don't break the fixing buckle;
4. After the coolant temperature is completely cooled, drain the fuel tank cleaner and coolant together, and finally replace it with new engine coolant.
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