I just recently changed the oil in my 2013 Yamaha Grizzy 550 4×4 and within a few days I had oil all over my skid plate and it was dripping onto floor. I pulled off the skid plate, wiped it down, and tightened the oil filter (it was slightly loose so I thought that was it).

I took the bike for a spin and let it sit in a new spot and it appears the oil is leaking out of a narrow tube that appears to be attached to the oil/engine compartment. My 700 has the same tube.

What exactly is that tube and why would oil be dripping out of it?

Thanks,
Cameron