On the right side of my 2015 Norge there's a clear plastic tube with a plug on the end of it that's always filled with oil (see picture...that's the rear brake lever on top, and it's leaking on the spring for the center stand). Every time I pull the plug out of the bottom of the tube to drain it, it fills up next time I ride.
Questions:
What is this tube/what does it vent?
Should it fill with oil every time I ride?
If so, should I be drained every time I ride, or just leave it?
Questions:
What is this tube/what does it vent?
Should it fill with oil every time I ride?
If so, should I be drained every time I ride, or just leave it?