Water consumption in Lupo 2005, does not pass to oil

Man thank you very much, I'm going to check the block and heating that tell me, your comments are really very valuable. Thanks Acosta !!!

Know? The older fan did not work and if I was in fact, they took the thermostat, but I already consumed antifreeze before, they changed the fan, and still without the thermostat. They passed the scanner and the fan works at the temperature that must work and to date it has not heated to me, the strange thing is that they already checked the oil and apparently does not pass the water to the engine.
How do you see ?? greetings

Change the antifreeze deposit plugs and also the radiator plug and purge the entire system

I would not know what to tell you ... I don't know that anything else can be ...
It may be that hose clamps were loose and the antifreeze when falling into the engine block evaporates. Maybe that's not leaks.
The thermostat only makes the engine hot faster to reduce fuel consumption, since the engine when it is cold consumes more fuel than normal.