When checking my plugs for correct gap I noticed that in cyl 5,6,7. Or if your in drivers seat its the 3 plugs except the closest plug on drivers side. None of them seemed to have it getting into the engine. One had some on the tip but I think it was from dripping off the plug as I pulled it out As it had no residue on the plugs and the exhaust doesn't have any oil comming out the pipes nor its smell. The oil level is neaver below the full mark. Is this the valve cover gaskets. Or something else and is it something that needs to be addressed immediatly or ? Considering the labor cost if available I think I would get some better looking valve covers while I was at it since the pcv intake on the drivers side is cracked and silicone sealed.