To replace the thermostat it will take about a liter of antifreeze and a key of 10. First of all, it is necessary to leak the antifreeze from the radiator through the drain neck on the left. Then we need to remove the fat hose from the expansion box and then remove the tank. It is important to set up a generator to prevent antifreeze from falling on it (this could lead to closure). You can then remove the thin and thick hoses from the thermostat. Now you can dismantle the thermostat and replace it with a new one.
