Don't worry about it - hope it helps you out some time. By the way, we're up at Proserpine - drove from Toowoomba on Sat towing an Avan - had the overheat temperature light and chime come on after a very long climb.....pulled up and thought the worst....coolant tank was full and overflowing but engine not boiling and no hot engine smell...gauge on 1/2....let cool down, topped up and drove a further 100km at reduced speed. Left it overnight with no further loss of fluid - noted that when engine warmed from cold that I could feel warm coolant flowing thru the top radiator hose indicating thermostat stuck....also when engine was hot I could squeeze hoses in indicating no pressure in system. So engine boiled due no pressure and restricted coolant flow. Anyway, Supercheap to the rescue and a new thermostat and cap put it back to "as new".
But I was lucky eh!
Regards