Hello I have a 1990 300zx na. I have a leak at the oil filter tree and am gonna get a new oring and paper gasket. My issue is I hear a lot of people online say it leaks still with a new gasket and oring. How often is that? Do I have to use grey rtv with it? Is so where? And if possible someone know the torque on the bolts I would appreciate it. Thank you.