A few moths ago I checked the filter and srewed it back at 35Nm. It seemed very clean.
Back then the leakage was a lot smaller. It was the reason for checking.
Before driving to the service I didn't want to check (as I tightened it to 42Nm, few weeks ago) and feared that if I open it now a greater crack would happen.
Anyway, now I need ti see the new ones behavior - first need to clean it. (As the mechanic didn't srew it enough and it leaked. One cm (about half inch) more srewing was needed - on the new filter housing there is a mark - and when I srewed it rightly the two marks lined up.
I don't know how the mechanic guy missed it.
He also didn't put enough coolant back to the system. The filler was totally empty. And I refiled it (with distilled water) a few times as it kept being soaked up (down).
The temperatures where never above 93 and with holf full coolant tank they went up to 97 (even in idle) - also the dpf regen activated during that trip - I hope the heat didn't do some damage.