I noticed that the coolant level in my overflow tank was a little below the minimum line, so I was going to add some. I was under the impression that the 610 takes blue coolant, so I picked some up at the local BMW dealership. But when I went to top it off, I realized that the coolant that's in the bike is green, not blue, so I didn't add any because I know that you can't mix coolant colors. I bought the bike new and haven't changed the coolant yet, so the coolant that's in it is what it came with. So do the rest of you 610 owners have green coolant or blue? Should I just add some green, or should I flush it and go blue, or does it even matter which kind I use?
The color does not matter. You can mix different coolants as long as they are the same ethylene glycol base. It even says so on the containers. Probably all coolants used from the factory are ethylene glycol based. Some guys change to propylene glycol. If in doubt, flush it out and buy a big jug of Prestone and dilute with 30% distilled water. It will cool a little better than the 50/50 blend. I add Water Wetter also. All available at Autozone or O'reilly. My coolant was blue, probably AGIP brand which no one has anyway. Did you buy a used bike? If so, your green coolant could be Maxima Coolanol, a popular 50/50 blend which is sold at Cycle Gear and most other motorcycle parts dealers (Dennis Kirk, Rockymountainatv, MC Superstore etc) http://www.maximausa.com/company/pdfs/Coolanolplate1pg4C.pdf
