I had my "overheating" event around 190k-200k, when the upper radiator hose got a pinhole in 100F summer heat on the freeway. Temps were 115C on the gauge, which was 'normal' to me since I had just bought the car and was trying to fix the 'hot running problem. I didn't know it was losing coolant until I exited the freeway and steam was rising from under the hood, and the gauge moved near 120C. Towed home, fixed hose, problem solved. (A new radiator and fan clutch got temps to 90-95C, btw.)

It was 30kmi+ later, at 230kmi, when the head cracked. It happened almost overnight, there were NO prior symptoms, just one day *poof*.