Oil in airbox?

[Ride_Relief]

Yesterday I was riding and my brother noticed that the plastic drain cap at the bottom of the air box was black. Enough oil had accumulated to fill the plastic cap and coat the bottom of the air box. I assume that it came from the carb but am not sure if I should be concerned. A few days earlier there was fuel on rear brake skidplate and on the floor under it. The only thing I can think of is I've been learning wheelies and have been doing a lot of them lately. Could this cause oil or fuel for that matter to come up into the air intake? Is there any wear or damage that can occur from frequent wheelies or am I just wasting some oil?

Thanks a lot

 

[hickskateboarder]

the oil probably just was excess in the air filter.they are soaked with oil to catch dust. and the gas probably just came out of the carb dump tube from standing it up.

 

[specialized7]

i always shut my gas off every time i stop riding