187-192° is the average running temperature on my three that aren't scattered about in boxes, 205-ish when idling in heavy Charlotte traffic.

As pointed out in earlier posts, the fan should engage at 217° or when the A/C is on.

Anything over 235° to 240° is very dangerous on Ecotec engines, it's almost a guarantee of serious damage.

 

180* - 190* w/ A/C on, goes higher at stop lights, or standing still.

I have AC Delco (overpriced GM) T-Stat & new Dexcool, a while back.

 

Cool! pun intended of course!

 

Indeed Sir.

 

I recently taped off the grill nostril under the bumper as well as the empty fog light holes.
Was worried about the boost but now glad it's approaching normal :)
Winter (MI) MPG was 18-19.5.

Even in summer, operating temps never seemed to rise above 195. Got 21.5 best city MPG.
With the aerodynamics boost and increased efficiency I'm hoping for better MPG. Will update!

 

Do you have an SS 2.0 turbo, in other post you state you have a LS 2.2, which wouldn’t be under boost.
If you closed off the air intake under tge fender you cut all intake air to the throttle body and that will increase fuel consumption

 

Trading minimal MPG for engine life seems kinda expensive.

 

That gas mileage is not as good as one might expect. Member here SS Fan claims he gets 30+ on a boosted & tuned SS

 

If you can find where he posted that I would be interested in reading it.
I have a Trifecta tune in my SS that can be altered by Trifecta. I guessing SS Fan has HP Tuner.

 

On the freeway I get 30+ as well, HPTuners