hi, just changed oil on 2.2 diesel and the rubber o ring keeps pushing out of housing for the filter and leaking oil. got a new o ring and some more oil, can anyone tell me if the new o ring should go all the way to the end of the plastic thread on the filter housing screw in part, or should it go in the recess in the thread about 10mm up from the end of the threads.
also how tight is 25 Nm. is this quite tight, maybe i havent tightened this up enough