Ruby Radiator Water Level

[Reckless Rat]

I am sure a lot of problems with overheating are down to the state of the radiator or engine block. I have just completed an 8 day 2000 mile trip in my RP, running at 45mph most of the time and the run included crossing the Pyrenees twice. It involved several long and high climbs (the highest was 2404 metres). Ambient temperature was between 26 and 28°C. The car never overheated and the water level remained constant throughout, sitting (when cold) at the bottom of the semi-circular moulding in the filler neck. If I topped it up any higher it would just drip out of the overflow.

My radiator cap is "sealed" with some clear silicone to prevent splashing out of the top. The car has a four blade fan.