About a week ago, I checked the oil in my 2008 Fat Bob. The level was below the low level mark on the dipstick. I bought oil and added enough to raise the level to within the acceptable range (according to the stock dipstick. Today, I noticed oil around the spark plug well on the top of the engine. What does this mean? How can I fix this? Any help would be appreciated.

 

Sounds like a rocker box gasket is leaking.