Hello, after I had problems with cooling water loss again and again, I borrowed a printer yesterday. I gave 1.2 bar overpressure on the system, as VW recommends, but they do not express themselves to the duration. After half an hour the pressure had already dropped to 1bar, after a little more than 4 hours it is slightly more than 0.7 bar overpressure. The system is leaking in my eyes – it must actually also be able to keep up 8h without loss… (?) because if I am 8h The leak is also visible, despite the fact that I have tried to replace the clamp for a hose clamp, tightened with the prescribed moment according to the Norma data sheet. The socket is new and close to its bolting point.