gave this some serious abuse, got me to pvs and back, 3 runs up the strip and some serious a*** kicking including a good 10 seconds with the needle off the clock and buried into the reset button, still shows no signs of cracking or moving so think i may have proved you a bit wrong dan although i've never had the temp gauge above half, even in traffic so dont know how it would manage at higher temperature. wouldn't use it for a balls out track car either ernie