I got a 88C in my 2wd, which runs at around 73/76, but the 82 ran around 78/83!!, I find if I were to let it warm up so it gets really hot it stays like that for the rest of the day, but otherwise stays lowish, on the gauge anyway.
Doesn't help with the heaters being so crap either, me other half has astra, that is like a furnace compared with cossie, even in snow ice conditions don't have temp turned up full, and fan on 1.
tabetha