I got my bike last week, noticed the coolant is low. I took the cap off the reservoir to top it off and the stuff in the bike is blue....I called the dealer where I bought the bike and they said the bike comes from Aprilia with oil and coolant already in it...they don't know what kind of coolant is in the bike. I just wanted to top it off, and didn't want to have to drain all the stuff out and put in some other brand of coolant, didn't want to mix brands either. Even though it probably wouldn't hurt anything. I'd just feel a little better knowing it's the same.