Hi, Looking for a bit of advice on the cooling system again, sorry! I have concluded that the dash gauge misreads so no longer rely on it. Instead I run around with an OBDII reader plugged in relaying live data. Based on the OBD readings, the car generally runs between 71C and 77C. I suspect this is a little low but not sure? On a run last weekend the coolant temps were within usual operating range (70s with the odd foray into the low 80s whilst sat at lights). However, when I pulled onto the drive I let the car idle to see if the temp would peak and then stabilise. Within 2 mins the OBD reading hit 92C before I bottled it and shut the engine off. There was no sign of the temp levelling off. Interestingly, there is no issue when moving - even at 10mph where there is limited airflow through the engine bay - the temps drop 4 or 5C within 20 seconds of moving off, even at extremely low speeds. This is a long-winded way of asking if (a) I am simply being deceived by my sensor getting heatsoaked and I need to stop worrying and get on with things! (b) there is yet more bleeding to be done to remove an air lock © my thermostat or water pump isn't behaving properly at idle? As background, I have back-filled the heater hoses, filled the radiator to the brim, massaged the pipes, all with the nose jacked up as high as possible.