Originally Posted by
pegasus1300
Change the coolant.
On the 998s and maybe the 1330s but don't know about them the drain plug tap is not braised into the radiator only a press fit. My dealer told me that they have had a few come out when removing the plug. To fix this they have had to remove the radiator and and go to a radiator shop to have it properly brazed in place. They remove the bottom hose to drain the coolant.
Now as I have said I have not heard of anyone on here say anything about this and there are a lot of do it yourselfers and I am sure that more then one has replaced their coolant,so maybe it is only a problem with the mechanic at my dealership,but still forewarned and all that.