Moin! The topic is well known on all sides. Can’t be that an engine gives up early. Unfortunately, that’s the way it is. Sometimes the cars have only 20000km on it and the cokings are clearly recognizable, at 60000km already considerable and at 100000km the engine needs an elaborate walnut shell cleaning. That can’t be. Incidentally, is a main reason why I wouldn’t buy a used direct injector at the moment. As far as I know, one can hardly Do something. Or are there any new developments that I don’t know anything about? What do you think? Is there anything you can do at all?