Hello All I have a 1998 A4 and I took it away over the weekend. I noticed the temperature went above normal levels while driving on the motorway so I pulled over. When I pulled over and the car was at idle the temperature came back down again which I thought was strange. As I had to get the car home I checked the water and topped it up and continued driving. Again when on the motorway the temp went up. I continued like this driving at 50mph where the temperature would stay below dangerous levels but still above normal operating temp. I had to pull over several times to top up the water.....which was going down but I couldnt see it leaking anywhere. I also notice that the fan was working but the second thermo fan was not. What is the second thermo fan for and why would the car be loosing water but no leaks seen in the engine bay? Thanks very much.