My bike got pretty hot on the morning commute this morning. It got to 120 degrees and I was pretty worried. Then I noticed a god awful smell and saw something was leaking onto the headers and burning. I took off quick when I could to try to cool it down and the back wheel went into a spin (presumably due to the liquid). I started turning it off at the lights after that. Arriving at work it proceeded to disgorge coolant for a bit. The question is: is this something I should be worried about? I suspect it is probably normal, but I've never experienced it before in many years of riding. And I used to live in much hotter Perth. I'm guessing that coolant overflow thing overflowed (I know what it looks like, just not its name). It wasn't to good that it ended up right in front of my rear tyre.