Originally Posted by cadiver
You need to use the manufacturer recommended thermostat.
"need" is a strong word my friend
Bill, as they mentioned above, its good once modded and tuned, useless when running stock, it wouldnt hurt anything but your pocket for few bucks
I live in Fort McMurray Alberta Canada, we get really cold winters here, somewhere around -60 C*, i had an 03 grand prix with 180 tstat and warming wasnt an issue at all
my brother is also running a 180 tstat in his 06 intercooled 06 gp, and again no problems