I have an 2008 brute 750. Been getting a few drops of oil under it recently. Now today there was a little puddle. Checked the oil and it’s still full. I snapped a few pics but don’t know what this is or why it has oil in it? I think it’s coming from here but not real sure. I might need to pull the plow mount off so I ca see better. That little tank deal is attached to some sort of vent?