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Old Jan 5, 2019 | 11:55 AM
  #11  
Oldblue's Avatar
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Joined: 10-13-2011
Posts: 40,083
From: Welland,Ont Canada
I’ve got to clarify, our thermostat spec is 180 degrees.
our Dexcool has a life of 5 years.
have you considered, simply draining the cooling system, flushing out the heater core, installing an AC Delco 131-158 thermostat, then refill the system with fresh 50/50 mix Dexcool.
Ive stuck to the five year life of Dexcool, and have no problems in hot 106 degrees in summer and -10 degrees in winter.
my 2.2 is consistently running at 180 to 200, on the DIC digital readout.
Old Jan 5, 2019 | 12:06 PM
  #12  
Ohiocruiser's Avatar
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Joined: 09-15-2013
Posts: 406
From: Cleveland. Ohio
185-192 degrees
Old Jan 5, 2019 | 12:50 PM
  #13  
donbrew's Avatar
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Joined: 01-23-2009
Posts: 26,533
From: Fredericksburg,VA
The important number is "above 180F". That is the reason for a thermostat.
Old Jan 6, 2019 | 07:48 PM
  #14  
tiapetra's Avatar
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Joined: 04-03-2018
Posts: 249
From: Florida
Originally Posted by Tshane3000
Usually my LS 2.2L only 183 plus, rarely hits 190.
Hope to increase w grille nostril mods. (See my other post today).
Since I only recently had the serious plan to modify the grill, I haven't tracked summer temps.

What's considered normal for temperate zones like Midwest, Northeast (NY, OH, PA, IL, etc.)?

What temps ea. season are ideal?
You have a 180° tstat so it should run close to that if the complete cooling system is up to snuff.
In Florida heat at 95° ambient, it runs at or near 180°, occasionally up to 184° with or without the a/c under all conditions except when sitting at a long lite without the a/c on and it will climb up to around 215. I then turn the a/c on and it goes back down immediately.
Old Jan 7, 2019 | 10:50 PM
  #15  
sleeper's Avatar
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Joined: 01-09-2007
Posts: 16,081
From: SE USA
The fan should automatically kick on @ 217* F

Mine runs 178- 185 depending.
Old Jan 8, 2019 | 09:43 AM
  #16  
donbrew's Avatar
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Joined: 01-23-2009
Posts: 26,533
From: Fredericksburg,VA
This thread from 2006 has REALLY gotten off topic. The necromancer wanted advice on RAISING the operating temp in a misguided attempt at improving MPG.

I'm tired of reading the same off topic replies now. CLOSED.
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