Originally Posted by andrewg
have also seen in really cold weather if there is not much antifreeze it is possible that the radiator can freeze inside causing the engine to overheat
Never thought of that, im just up the road from you so you'll know its fucking bitter tonight, -2/3 earlier. Ill check that out in the morning.
Could it be airlocked? Would flushing out the system and re filling it be worthwhile?