Hello, I have a problem here, this would be that with my Opel Omega A, 2.0 l, petroler the oil is pressed out of the filling lid again and again. Valve cover seal has already been changed the 3rd time. He has a new cat already. 3 different lids have already been tried out and that was the turn, a newly bought and a used original lid. From all the oil was squeezed out. What can this be? FG Oliver Leo