I pulled into the servo the other day and noticed coolant dripping onto the driveway. I drove straight home and the car did not reach a high temperature but i thought it was running a bit higher than normal. It is a couple of days later and I have not driven the car since but had the time to investigate. So the radiator was empty - the expansion tank still had coolant in it and it was normal colour (though the level was low - below the minimum mark). So I filled the radiator and went for a quick drive + idle in the driveway. The fan kicks in when it should on reaching middle temp on the guage (idle), the car did not overheat on the drive today - temp seemed normal. However when I stopped the car there is coolant coming from the bottom left of the radiator. All above it seems dry. Would this be simply a hole / leak in the bottom of the radiator? Can the thermostat or housing cause a leak? trying to pin it down. It is hard to see.