Get one to match the colour of your car Doesn't matter which you use as long as you follow the mixing instructions and (if changing) remove any airlocks in the pipes (bane of my life last year ) after .
How fast is the temperature gauge moving and have you got above the minimum level of coolant at present? There's a thread on possible causes of high temperature readings here, will find it out for you
My fan is fine, i checked it and the coolant level is ok, the first idea that coming to me is that i have air locks, does someone can help me with that?