Tickford Owners Club NSW
Join Date: Apr 2001
Location: Blue Mountains NSW
Howdy Kerry & slow XR6,
Kerry's problem of coolant seepage at thermostat housing is quite common. If the corrosion hasn't bitten into the alloy you can clean it up and refit the hose with a new clamp.
The leaky water pump at 30k is less common. It might be a good idea to check for a condition called stray voltage. "E" series Falcons suffer from this condition a lot. When you have stray voltage in the cooling system, you actually have electrical current travelling through the cooling system. What it does is to attack alloy components in contact with the coolant. Cylinder heads most often, but can attack any alloy component. It eats the metal away and deposits it in the tubes of the radiator core.
It's easy to check if you have a voltmeter.