Theory is to pump some hot water out of the engine and into the rad every now and then.
Turning engine off will allow heat to build but tickover for a min will move water around and help bring temp down
Water in this case though was probably not moving as level too low for pump to pump
Not my theories just what I have heard over the years (disclaimer)....
Turning engine off will allow heat to build but tickover for a min will move water around and help bring temp down
Water in this case though was probably not moving as level too low for pump to pump
Not my theories just what I have heard over the years (disclaimer)....