This is the third time I have changed my plugs and I noticed a bit of oil in the spark plug hole. The plug boot seems to be sealing it away from dripping down into the plug itself, however, I don't remember this much oil the last two times I changed plugs.
I have not noticed any symptoms of burning or loss of oil, or any change in performance of the motor in general. I have seen pics other's engines and it looks like there may be oil there too, but I can't really tell.
Is this just a side-effect of having a flat-4 engine?