This is why I usually run a filter in the winter. This is condensation from a weeks worth of rides to work (15 miles each way) and one longer ride today. There is more water than oil but otherwise this would go right back into my intake and cylinders. And yes, I get it up to temp on my rides to work but I believe this comes from startup and after shutdown.
This also doesn't count what was in the sponges in the catch can.
This also doesn't count what was in the sponges in the catch can.