No. Having your fuel turned on will not cause oil to seep out of your air box. Gasoline should not be able to get in there either. If you or your dealer have recently cleaned the air filter, there's a good chance that oil is seeping from the air filter element. Take out the element and place it between a couple of paper towels and gently press out excess oil. Wipe out the air box and put it back together. It's not a big deal. I'm not certain about the V2 but some engines route the crank case ventilation line into the air box to burn off oil vapour being emmitted from the engine. If yours has a rubber line coming off of the engine into the air box, that's probably it. If the element isn't over saturated with oil, then, there's a chance that the oil is coming from the crank case ventilation system. If it is, that's a strong indication that your engine may be over filled with oil. If it is, you'd best reduce the oil level in your engine. Over filling with oil can cause excessive crank case pressure and damage seals.