@sacapuntas: Actually, if the engine is cold, it is not necessary to empty all that if you are going to wet a little hehehe, such as the mangary where the thermostat is on the top, I mean it comes from the cylinder/butt cover and goes to the radiator or base expands depends as the circuit, a question is that it always comes out of the
cylinder Yours is the following
there a way to test the thermostat that I forget to tell you that it is the following sell a device that submerges it in water (preferential mind that the resipient is quite hard PVC) This is a resistance that heats the water and a digital temperature meter.
Well you fill the resipient, you put the resistance the temperature meter plugs the resistance
you

want, commonly the thermostats begin to open over the 75º