Hello @ all, when I was a little bit busy here I also read hden thread about the Citaro buses with turbo damage or something similar the thread is there or ? Anyway, I noticed then in a sudden mental biltz that I don’t know at all like a turbocharger and a charging air cooler work and what the things with the engine do so everything … .. I think that this has not really lost something but since here someone has already told about f I just ask… You can also post a web address if you want mfG Rok’Alim