I installed my FMU on the drivers side valve cover using the center 2 bolts. I now have a small oil leak from the spot where i bolted it on. The covers are uneven with raised area so its not sealed like before. This means some air is allowed to escape or enter. Is this bad and do i need to seal it up with rubber washers or rtv sealant? Im not sure if under the valve covers it needs to be pressurized or not.

 

The car is supercharged so i guess the pressure would be higher.