Hello, I am currently coming to the end of a fair amount of work that I have carried out on my S3 (hopefully)... I have encountered an issue when I came to re-fill the coolant, after a few searches on here and google for 'coolant bleeding', I read that the method people recommend is to, fill the coolant tank to full, run the car with the coolant cap off and top up as necessary.. The problem I have is that I have filled the coolant tank up (it has taken 1.5L in total so far), but when running the car with the cap off, the level does not change! (when held at around 1400rpm and above, the level drops around 10mm, but this returns once the revs drop back down). I have tried putting the cap on and letting pressure build up, then relieve it, rinse and repeat.. The water pipes seem to be getting warm, as they should in normal practise. When the fans kick in at 75C, the air flow is warm, to suggest the radiators are getting heat.. Any tips, please? This is after I had done a Timing Belt and pump change. The vehicle is a 2002 S3 BAM Thanks in advance! Conor.