Peugeot 307 warm air small water tank is located in the cab, and the small water tank is on the accelerator pedal side. This situation should be dealt with at 4s shop immediately, which may be due to poor sealing of water pipe sealing ring or water leakage in small heater water tank. The antifreeze is leaking. Go to 4s to check that the cylinder gasket needs to be replaced and sealed with black glue. Man-hour 1 100, cylinder pad 289, vinyl 100. This looks like a leak from the mouth. How did 4s know that the cylinder gasket was leaking?