Because the thin coat of oil on the rubber seal has been displaced by the pressure and the rubber to metal contact has addded quite a bit of friction that must be overcome.guitarman said:But why is the filter from the factory on so tight? I think my torque method is about 3/4 - 1 turn beyond seal seat.
It all depends on your strength.guitarman said:Isn't it pretty hard to get 7/8 turn past seal seat by just hand tightening? My Honda filter says to torque 2.0 -2.4 kgm with tool.
This is not an issue particular to Honda. (I am not a PROFESSIONAL auto mechanic)guitarman said:Is there a Honda mechanic on this list that can help us out here with the question of hand tightening vs. tool tightening???