For the last couple of months I have been noticing some liquid on the inside of my windshield and on the gauges. I am pretty sure it's some kind of oil because it doesn't feel like water. I have No idea where it is coming from. It looks like it might be coming out of the brakes but I don't see any fluid around the master cylinder and reservoir. I have no idea what it could be. Any ideas? Weird thing is that sometime I see the liquid after leaving the bike parked for a day or two.