After my last trip to the stealership they noticed some oil build up by the sparkplug banks and notified me telling me my valve cover gasket on the passenger side would need to be replaced. I started noticing over the weekend the buildup getting some more and also dripping down. I beleive some of the oil was leaking onto the header and causing some white smoke from burning the oil.

I was just curious if anyone here has replaced it and had any tips on replacing. From what it looks like it would just be top plenum, lower plenum, valve cover then replace the gasket ( i beleive a 10-15$ part from nissan)...some type of sealent on the gasket and then replace. if anyone has any sort of input on this or similar symptoms post away thanks.