Hi, I was checking over my bike and wanted to have a look at my Air filter, once I took off the top of the Air Box there was a lot of Oil in it, bike is pretty much stock, K&N air, oil filters and a Blue Flame can with 23000 miles on the clock, bike was never dropped or crashed, it runs just fine, starts first time every time. Did anyone have this problem before and know what it can be.

Thank you

Damian

Too many wheelies are the probable cause.

Clean it all out and check again in 100 miles.