Not sure if this is a problem but my old car (mk1 focus) I never had to top the coolnt up for the year I had it. Since owning my mk4 20vt, iv been topping up the coolant once every 2 months, only a small amount, about a cup full. Also I notice that on cold nights when shes stood ticking over I see small amounts of steam coming from the front grill, I havnt had any problems in the year iv owned it but just wondering if this is normal? The "problem" hasn't got any worse or needing more and more water, it's just people have mentioned the coolant should always be the same and never move, any help would be appriciated, thanks