then, it can boil down to [yes, pun intended ! laugh2] just how hot is "hot" ?
"hot" to me is 220+ with coolant loss in old stuff, while that temperature in newer vehicles is just running temperature.
with a good cooling system, i would rater see 205-210, than 160-170. but that's just me.
along with the elevated temperature however, the tune MUST be optimized for best results, or bad things WILL happen.
if one doesn't take the effort to do so, or can't for whatever reason, then it's imperative to keep the temps low.
wild swings from idle to cruse need to be looked at because a steady temperature is best.
just my opinion, your mileage may vary.
beer