Is a blown headgasket a common problem on these bikes? I'm looking at one local that's pretty cheap, but the guy says it's mixing oil and coolant. He says it's a blown head gasket but i'm not sure.
New gen or old gen? How much is he asking for it? Depending on how cheap it is, you can pick up an engine and throw it in for $400 and 3 hrs work if the engine is shot.