Urgent: Coolany leak; what are signs of engine damage?

[V987S]

Hi guys,It is unfortunate to introduce myself to the forum by saying that the 955 Cayenne 3.2 I picked up today developed a massive coolant leak whilst being driven home.When the low coolant light came on I monitored the coolant temperature, turned the air conditioning off, and drove very slowly for roughly 1.9 miles. When the temperature needle nearly reached the red line I stopped the engine to let it cool for a couple of minutes before starting again.On a side note, during these 1.9 miles I can hear a gurgling sound coupled with very slight pedal vibration several times as I feather the throttle. There was no white smoke at the end of the journey and the dipstick did not show signs of coolant contamination.My questions is: Is it almost certain that the engine has been damaged?The car has had a water thermostat housing replaced and a coolant-leak check by the OPC three days ago.

[wvicary]

That engine is rather robust but any overheat situation takes it toll, get the coolant leak sorted and hope there is no long term damage.

[V987S]

My fingers are well crossed.

The car is now at an OPC.

An update I wrote on rennlist:It was this very Porsche center that did the work on the cooling system.The mechanic at the Porsche center stated that because the thermostat housing he replaced was located in a position different to that of this plastic tube, he cannot be held liable for the cost of replacing the coolant radiator.I quickly replied that there must have been a possibility that the plastic tube got damaged when the car went in for a cooling system check, coolant vacuum, and a coolant thermostat housing replacement.At the end of the day the Porsche center has decided to waive the cost of new coolant fluid and partially pay the inevitable cost of labor, but I will still have to pay for the new radiator.Do you think for my circumstances I should be asking them to waive everything?P.S. Porsche does not have a regional office here in Thailand, and there is only one official Porsche center.