Ford Fokus>> Cooling system>> The thermostat
Remove the thermostat only on the cooled engine. If you do this work independently following spare parts be required to you: the thermostat, consolidation of a cover of the case of the thermostat, and also the hermetic keeping elasticity for a long time and теплостойкий (for example, DP300 from company Wurth). Merge cooling liquid in pure capacity that it could be used again. You can check up working capacity of the old thermostat, having heated up water in a pan to the moment when the thermostat valve will open. Then compare the measured water temperature in a pan to temperature which is put on the thermostat case. And still we do not advise to you to use the thermostat having an external touch from adjournment of system of cooling.