Went up the M6 on Saturday got on the Toll road by mistake :( and back again the next day.
Most of the time the temperature guage was just the right side of red, when normally it never even gets past half way.
Plenty of water so that is not the reason.
I wonder if the best solution is to replace the fan with an electric one as presumably the engine don't like being driven close to full throttle for long periods .
I was going to fit a Kenlowe some time ago, until I was advised that the plastic tags that push through the matrix frequently cause an aging radiator to leak, and then if you replace the radiator you will have to get new fixings.