Coolant change question
Melting Slicks
Joined: Jun 2007
Posts: 2,673
Likes: 9
From: Upstate New York
I plan on draining my antifreeze, mine is a2005 and im sure it hasn't been done yet, I was thinking I would change the t-stat at this time also, not having any problems just thought now would be a good time to put a new one in, any thoughts? is Dexcool available at most Aotomotive stores or is something you have to get at a dealer.
I would not replace the t-stat as part of the coolant flush - if it isn't giving you trouble leave it alone.
Team Owner
Joined: Dec 2002
Posts: 32,074
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From: San Francisco CA
Drifting
Joined: Apr 2010
Posts: 1,443
Likes: 7
From: Bristol raceway area
Sounds like your new water pump came with a 195* stat with it.
Stats have the opening temps inscribed on them.
I always test a stat in a pot of water bringing it to a boil gradually. I watch the temp and note when it Starts to open using a meat thermometer.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Your stock thermostat is/was 187*.
Sounds like your new water pump came with a 195* stat with it.
Stats have the opening temps inscribed on them.
I always test a stat in a pot of water bringing it to a boil gradually. I watch the temp and note when it Starts to open using a meat thermometer.
Sounds like your new water pump came with a 195* stat with it.
Stats have the opening temps inscribed on them.
I always test a stat in a pot of water bringing it to a boil gradually. I watch the temp and note when it Starts to open using a meat thermometer.
Thus far car runs mostly in the 196-198. Sometimes it still goes down to 192.
Race Director
Joined: Sep 2007
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From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Since the temp sensor is in the head on the opposite side of the t-stat, it's normal to see DIC readings about 10* higher than the t-stat.
Team Owner
Joined: Dec 2002
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From: San Francisco CA
Instructor
Joined: Jul 2013
Posts: 162
Likes: 73
From: Harrisville Mi
I had my Chev truck done. They hooked it up to a machine which extracted the old fluid, flushed the system and added new fluid? I take no one has tried this or they don't like the method. My 06 has 43k miles and was thinking about getting it done in the spring.
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Melting Slicks
Joined: Jun 2007
Posts: 2,673
Likes: 9
From: Upstate New York
I had my Chev truck done. They hooked it up to a machine which extracted the old fluid, flushed the system and added new fluid? I take no one has tried this or they don't like the method. My 06 has 43k miles and was thinking about getting it done in the spring.
Last edited by LMB-C6; Dec 15, 2013 at 12:54 PM.
Instructor
Joined: Jul 2013
Posts: 162
Likes: 73
From: Harrisville Mi
If it's like one of the machines I've seen they actually recycle the coolant. It goes through some kind of filtering process, they replace the additive package, and then pump it back in. Unless they were using the Airlift system, which after draining the coolant it creates a vacuum in the cooling system that then sucks new coolant in.
Le Mans Master
Joined: May 2005
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From: FORT LAUDERDALE FL
Team Owner
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
Also used distilled water, recommended by the lab that tested the old coolant.
Team Owner
Joined: Dec 2002
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From: San Francisco CA
Drifting
Joined: Apr 2010
Posts: 1,443
Likes: 7
From: Bristol raceway area
I always change the coolant in all my cars and trucks myself. Nobody touches my cars but me.
Pick up a couple gallons of Zerex Dexcool and several gallons of distilled water for the vette.
Drain, add water, run, drain. Do it Two times.
Add Zerex Dexcool, finish it up with distilled water. Simple.
Costs me less than $30. and know it's done right.
Pick up a couple gallons of Zerex Dexcool and several gallons of distilled water for the vette.
Drain, add water, run, drain. Do it Two times.
Add Zerex Dexcool, finish it up with distilled water. Simple.
Costs me less than $30. and know it's done right.
Racer
Joined: Aug 2012
Posts: 310
Likes: 2
I always change the coolant in all my cars and trucks myself. Nobody touches my cars but me. Pick up a couple gallons of Zerex Dexcool and several gallons of distilled water for the vette. Drain, add water, run, drain. Do it Two times. Add Zerex Dexcool, finish it up with distilled water. Simple. Costs me less than $30. and know it's done right.
Drifting
Joined: Apr 2010
Posts: 1,443
Likes: 7
From: Bristol raceway area
Hey rebel, what temps is your car running now? I just changed to zerex too and with a stock stat I'm running 203 steady, 208 when stopped and once in a while around 198 at highway speeds, but this is with around 40 degree cold weather... I thought I would get those numbers in the summer, not now...
Did your car run these temps before coolant change? Sounds like that there may be some "air" in your cooling system. Possible?
Change the stat? Some new stats are 195*. Stock is 187*.
Good luck
Racer
Joined: Aug 2012
Posts: 310
Likes: 2
that's what i thought. I did change stats from a 160 and pretty sure it is a 186 now, maybe air in system. I only changed what came out once, so maybe ill change it again to get more old out and make sure no air... thanks!!
203 cruising temp is higher than my car ever ran. With the stock stat it was always around 192-196* but never over.
Did your car run these temps before coolant change? Sounds like that there may be some "air" in your cooling system. Possible?
Change the stat? Some new stats are 195*. Stock is 187*.
Good luck
Did your car run these temps before coolant change? Sounds like that there may be some "air" in your cooling system. Possible?
Change the stat? Some new stats are 195*. Stock is 187*.
Good luck