[singingdrum]

Hi anyone have this problem? I have a Diesel Perkins and it is overheating. The water in the header tank disappears and can''t find where it is going! Have replaced thermostat and checked all hoses and the head and cannot find a leak. The oil is fine no water in it or oil in the water. Engine seems to run fine but water disappears almost as soon as you start up the engine. Is that disappearence normal? please help me! I am out of things to try..thanks...