Changing Coolant- 2008 Z51
Thread Starter
Burning Brakes
Joined: Aug 2000
Posts: 952
Likes: 0
From: Morgantown,WV USA
Changing Coolant- 2008 Z51
I need to do some routine maintenance this winter and want to change the coolant in my 2008. I have done this many times on C4s (incl a ZR1), but never the C6.
Is it the same process (drain & refill) or are there special steps to bleed the air from the system or such?
Thanks,
Dan
Is it the same process (drain & refill) or are there special steps to bleed the air from the system or such?
Thanks,
Dan
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
never done a C4 but its pretty straight fwd on a C6. The coolant system, in my opinion, seems to clear air from the system very well on its own. Maybe lift the front of the car a hair, but I dont think its necessary.
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
I agree, unless the coolant seems dirty or your changing stats I think changing your coolant would be unnecessary.
If you still want to flush out the old and put in new I would be happy to share some tips other members gave me that made my stat replacement a snap.
If you still want to flush out the old and put in new I would be happy to share some tips other members gave me that made my stat replacement a snap.
Thread Starter
Burning Brakes
Joined: Aug 2000
Posts: 952
Likes: 0
From: Morgantown,WV USA
Dan
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Pro
Joined: May 2001
Posts: 578
Likes: 2
From: River Ridge LA
Coolent Change
Hi all
Changed Mine this past weekend. I drained by the petcock on the
right side of the radiator. I let it drain about 30 minutes. measured
what i took out about 2 gallons Refill with a mix of 50% coolant
and water. It did get air bound but all i had to do was squeeze the lower
radiator hose a few times to burp it and all was ok
Good luck
Michael
Changed Mine this past weekend. I drained by the petcock on the
right side of the radiator. I let it drain about 30 minutes. measured
what i took out about 2 gallons Refill with a mix of 50% coolant
and water. It did get air bound but all i had to do was squeeze the lower
radiator hose a few times to burp it and all was ok
Good luck
Michael
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Racer
Joined: Apr 2006
Posts: 486
Likes: 2
From: The Villages FL
Leavinu, My C6 is an April 06 build with 24000 miles on it. The coolant is clear orange and the under side of the surge tank cap is as clean as day one. So from my current vantage point, I still think that dexcool is ok out to 150K or 5 yrs in a LSx engine. You have experienced sludge in your system. Please elaborate. Silicated green coolant is OK. You are now obligated to change it every 2+ years. The silicates in the coolant will wear the water pump shaft seal quicker.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
I have been running Dexcool in GM cars since 97. Several of them including two Corvettes have gone through the 5 year period and were on their second fill with no problems. One car was on its third 5 year fill of Dexcool. No cooling system issues with any of them. Much better than my 40 previous years experience on a bunch of cars with the green stuff which turned rusty within two years and had to be replaced. Even when I replaced the 5 year old Dex it still looked as fresh as the day it was installed. Dex is much easier on me, the car and the environment since you don't use as much of it. Don't be nervous of it, embrace it. Do not listen to the scare stories that are mostly myths.
Bill
Bill
Racer
Joined: Apr 2007
Posts: 255
Likes: 0
From: Shrewsbury MA
I have been running Dexcool in GM cars since 97. Several of them including two Corvettes have gone through the 5 year period and were on their second fill with no problems. One car was on its third 5 year fill of Dexcool. No cooling system issues with any of them. Much better than my 40 previous years experience on a bunch of cars with the green stuff which turned rusty within two years and had to be replaced. Even when I replaced the 5 year old Dex it still looked as fresh as the day it was installed. Dex is much easier on me, the car and the environment since you don't use as much of it. Don't be nervous of it, embrace it. Do not listen to the scare stories that are mostly myths.
Bill
Bill
Melting Slicks
Joined: Sep 2005
Posts: 2,670
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From: merritt island fl
C1 of Year Finalist (stock) 2019
2016 C1 of the Year Finalist
2015 C2 of the Year Finalist
Hi all
Changed Mine this past weekend. I drained by the petcock on the
right side of the radiator. I let it drain about 30 minutes. measured
what i took out about 2 gallons Refill with a mix of 50% coolant
and water. It did get air bound but all i had to do was squeeze the lower
radiator hose a few times to burp it and all was ok
Good luck
Michael
Changed Mine this past weekend. I drained by the petcock on the
right side of the radiator. I let it drain about 30 minutes. measured
what i took out about 2 gallons Refill with a mix of 50% coolant
and water. It did get air bound but all i had to do was squeeze the lower
radiator hose a few times to burp it and all was ok
Good luck
Michael
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Bill
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
I need to do some routine maintenance this winter and want to change the coolant in my 2008. I have done this many times on C4s (incl a ZR1), but never the C6.
Is it the same process (drain & refill) or are there special steps to bleed the air from the system or such?
Thanks,
Dan
Is it the same process (drain & refill) or are there special steps to bleed the air from the system or such?
Thanks,
Dan
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
[QUOTE=calemasters;1572404546]I would not change the coolant. I can not think of one reason why unless you are close to 100,000 miles.[/QUOTE]
What about the statement in the manual to change it a 5 years or 150,000 miles. I have 23,000 miles and am planning on changing it at 5 years. Is that a waste?
What about the statement in the manual to change it a 5 years or 150,000 miles. I have 23,000 miles and am planning on changing it at 5 years. Is that a waste?