Hi all I have a 2006 3.0tdi Q7 which has developed a fault on the drivers side front suspension in that it goes down over night. Having raised the car up and squirted soapy water anti the strut/airbag etc, the place the bubbles are apparent is at the top of the strut where the cradle seems to sit just above where the air pipe connects. My question is does anybody know if there is some sort of rubber seal there or is it a sealed unit and I need a new strut. Any advise would be greatly appreciated as if it's just a case of a new seal at cost of a few pounds rather than a complete suspension strut.