I’m a little baffled about this one as I can’t seem to find the root cause of my coolant level issue. For the past couple of weeks I’ve noticed that my expansion tank is almost empty and when I take the cap of the rad I can see that it’s full to brim. So I’ve topped up the expansion tank as per manual between low and full only to see the level fall way below low after a few days.
My initial thoughts were oh sh!t the head gasket, but having checked he oil and cap for white sludge and the fact that there is no billowing white smoke after warm up I’m none the wiser. I’ve checked water pipes for leeks or weeps around clips but nothing.