I would be a bit worried getting that hot, with a new rad fitted they tend to run cool.Check for a duff thermostat [even if new]
To clear system of air, park on slight up hill and fill through radiator plug.
 
I have been having exactly the same problem, except that I have a new radiator, new heater matrix, new hoses, new thermostat, new water pump, no visible coolant leaks any where, but after about 7 miles the temp gauge reads just under the red. I have been topping up the coolant every day hoping it is just an air lock slowly working it's way out. There is no mix of oil in the water or water in the oil, so I wouldn't think it is hard gasket related?

Is your rad hot all over or only in parts ? Maybe a baffle problem ...
 
[QUOTE="tottot, post: 3684449, member: 53408"Check for a duff thermostat [even if new] To clear system of air, park on slight up hill and fill through radiator plug.[/QUOTE]

It is a brand new genuine item (Waxstat). but I will drop it out again and try it.
 

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