For some reason I cant stop the oil leak coming from both side of the valve cover. I had them replaced today by my shop with new nissan gaskets and they even superglue them to the valve cover and they still leak but not as much now. Is there something I'm missing... is there any sealant I can use for the valve cover to stop the leaks? Its not a lot but like a few drips on the floor from each side.

 

Do you think the covers are warped a little and where is it leaking from the corner or side?

I've changed my gaskets a couple of times you have to watch to make sure the corners don't pop out.

Make sure all the bolts are tight especially the ones in the bottom corner near the firewall.

 

it was leaking on the back side of the valve cover. All bolts are tight so I dont no how the corners can pop out.

 

The corners can still pop out when putting the cover in place.

Replacing these gaskets is a PITA because you can't really tell if the back side of the gasket is still in the groove or not.

I tightened down every thing then when I ran the car I had a leak in the back corner on the bottom.

I removed the valve cover and found out the gasket was pinched from popping out in the corner a little. I had to get a new one because it was cut.

 

You could use a mirror to see the back of you valve cover if can't see back there.