how do you drain, and fill the coolant on an 05 vulcan 800. I added a little water so I could see the coolant in the sight hose. the coolant is still clear, after 200 miles shouldn´t I see green or red coolant in the hose. I bought the bike from a dealer used with only 500 mi. How in the heck did it get plain water in it. or maybe the coolant is a new "clear anti-freeze. does anyone know whats going on. fred