So I was out riding today, everything was great, and suddenly theres coolant shooting everywhere. I'm guessing a blown hose, tho I cant tell where til I take the tank off. But it also appears to have oil in the coolant. Is there any possible reason for this other than the obvious bad head gasket? I've never taken the covers off, wouldn't really mind the project, but I'm wondering if theres another possible cause that I should investigate first. Any suggestions?