Hi all, got a 97 A4 Avant 1.8T that's got a coolant leak but it only appears to happen once the car is up to temperature with the engine turned off. At first I thought it might be the water pump but that would result in a leak all the time as the water appaers to be coming from around that area but evrything is hidden behind the alternator and power steering pump dropping onto the undertray and running off that. Has anyone any ideas, I'm going to have to get it up on the ramps and get underneath to make sure but if I know what iti is I can get the parts to fix it and do it all in one go.