Originally posted by ramon1809:
Yeah, I tought about the cap, but i've checked it and looks fine, how coul I check if in fact it is fine?
Also about the mixture, how could I know if I have 50/50??
Get the cap pressure tested by a radiator shop and buy a coolant hydrometer. It is a device that you use to take a sample of the coolant, see what the mixture of water to coolant is and the boiling point of the mixture.
The hydrometer is cheap and the caps are not that expensive either.
Stephen