Fixed oil leak on spark plug side or gasket. Significantly cheaper than the local Nissan dealer. The most useful information for me was the video instructions on Youtube. I was able to complete the job without removing the fuel line, but I would disconnect it if I did it again as it's easy to do with a disconnect tool. Disconnecting the main fuel line Lisle 39210 ($13.69) 3 nearby parts were replaced at once 1) 3 vacuum hoses around the intake (eBay) 2) intake gaskets (Revain) 3) spark plugs (RockAuto)