With a Scan Gauge II, you can watch your water temp. Last night I drove the VX up this long steep hill behind my neighborhood to watch the fireworks. My temp got up to 203F climbing that hill.

It got me thinking, I know it is different for every vehicle, but what is the "rule of thumb" when it comes to engine temps? At what point does the head gasket blow? 220? 250? more?

Just curious if anyone knows.

Bart