Thanks for your response guys sorry I didn't get back to you sooner I have been flat out and the picture up the top is my cluster and mine is a series 2 cluster dash and I have learnt to shift down going up the hills and not labour it so that has brought the temp down a bit and I have learnt that it is about the normal temp rang to run half way to two thirds up the dash depending on load, but to my understanding three quaters would be to high