Why is Oil on spark plugs for 2.2L 2200?

I'm laboring under the assumption that you're speaking of the tip of the plug that goes inside the engine?

I'm certainly not an expert on this kind of problem, but it seems that there are only a couple

of ways for oil to get into the combustion chamber. I'd sort of suspect worn valve guides or worn piston rings which are allowing oil to seep by. A compression check will be a good place to start.

FriPilot