Engine temperature

There's something not right about the temperature gauge on my 45. I notice that on the cold days we have been having recently that the gauge moves towards the halfway point after after about 5 or 6 miles - as it always has done - but then starts to go back to zero!



On a journey of about 25 miles this evening it was ok to start with then after 15 miles or so it was down towards the zero mark with the heater not giving out much heat. It seems to me that the thermostat is on the blink - what do the team think?

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