I bought a '00 gsxr750 track bike. It performs amazingly. But, while on the track it pushes water out the overflow into the "jug". If I start with the jug almost empty, it will push out just enough to fill it up, and that's it. The bike does not run hot on the track. I was at Barber on 10-8, and it was running like 180 on the track. After it cools down, it pulls the water back into the radiator.