While changing my spark plugs today, I noticed a bit of oil around the spark plugs, down in the spark plug canal itself. See attached pic. 2010 g37 sedan.
Quick research is pointing toward valve cover gaskets but I'm wondering if there is any other possible sources.
Also, if I take it in to have the gaskets replaced, what else should I look for or have done while doing this work?

Thanks.

 

Hurry and check your in service date. my head gaskets leaked (09 with 65k miles) and they replaced the head gaskets as well as the rear valve cover under powertrain warranty (6 years 80k miles i believe)

 

Does your coil pack have oil on the top? If so, it could be as simple as swapping out grommets. If it's the bottom alone, head gasket

 

Didn't appear to have oil on the coil packs.
I totally didn't think about the warrant for some reason.. What a bone head!
I'll have to take it in and see if it's covered.