C8 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by: CARiD

Coolant replacement procedure

Thread Tools
 
Search this Thread
 
Old Jan 3, 2026 | 07:29 PM
  #1  
Misty C8 Z06's Avatar
Misty C8 Z06
Thread Starter
Burning Brakes
Liked
Loved
Top Answer: 3
Top Answer: 5
 
Joined: Jul 2024
Posts: 773
Likes: 465
Default Coolant replacement procedure

Does anyone have the procedure to
drain and replace the coolant on c8 z06?

thanks
Reply
Old Jan 4, 2026 | 09:13 PM
  #2  
MKC8's Avatar
MKC8
Burning Brakes
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: May 2023
Posts: 1,002
Likes: 356
From: Ontario
Default

What says the OM?
Reply
Old Jan 4, 2026 | 09:35 PM
  #3  
Misty C8 Z06's Avatar
Misty C8 Z06
Thread Starter
Burning Brakes
Liked
Loved
Top Answer: 3
Top Answer: 5
 
Joined: Jul 2024
Posts: 773
Likes: 465
Default

Originally Posted by MKC8
What says the OM?
the OM only says the spec of the coolant and frequency, not how to replace. Btw no more OM in the glovebox these days.
Reply
Old Jan 4, 2026 | 10:01 PM
  #4  
Mitchell_B's Avatar
Mitchell_B
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 2023
Posts: 1,353
Likes: 1,115
Default

Originally Posted by Misty C8 Z06
Does anyone have the procedure to
drain and replace the coolant on c8 z06?

thanks
Im pretty sure I have this on my hard drive. When I next get on my computer, I’ll look.

It is an involved procedure amongst other things, requiring a vacuum pump to properly fill the system.
Reply
Old Jan 4, 2026 | 10:05 PM
  #5  
Misty C8 Z06's Avatar
Misty C8 Z06
Thread Starter
Burning Brakes
Liked
Loved
Top Answer: 3
Top Answer: 5
 
Joined: Jul 2024
Posts: 773
Likes: 465
Default

Originally Posted by Mitchell_B
Im pretty sure I have this on my hard drive. When I next get on my computer, I’ll look.

It is an involved procedure amongst other things, requiring a vacuum pump to properly fill the system.
thanks in advance. I do have a vacuum pump kit with various connectors.

Reply
Old Jan 4, 2026 | 10:29 PM
  #6  
Andybump's Avatar
Andybump
Race Director
15 Year Member
Community Influencer
Community Favorite
Top Answer: 5
 
Joined: Mar 2007
Posts: 11,249
Likes: 8,384
Default

following
Reply
Old Jan 5, 2026 | 01:42 AM
  #7  
Mitchell_B's Avatar
Mitchell_B
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 2023
Posts: 1,353
Likes: 1,115
Default

Originally Posted by Misty C8 Z06
Does anyone have the procedure to
drain and replace the coolant on c8 z06?

thanks
Check your PM
Reply
Old Jan 5, 2026 | 02:35 AM
  #8  
X25's Avatar
X25
Sr.Random input generator
Supporting Lifetime
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 7,773
Likes: 2,210
From: Sammamish, WA
Default

It would be great if one of you folks could write a short how-to, so we'd know roughly what the precudere is : )

For instance, is filling and burping until it not longer accepts more fluid, then driving and refilling for a few more days a sufficient approach. I'm sure service manual would not recommend such a method since they don't have "multiple days to burp", but if it works, it'd be the best way for the owners with no specalized tooling.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Jan 5, 2026 | 12:43 PM
  #9  
MKC8's Avatar
MKC8
Burning Brakes
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: May 2023
Posts: 1,002
Likes: 356
From: Ontario
Default

Originally Posted by Misty C8 Z06
the OM only says the spec of the coolant and frequency, not how to replace. Btw no more OM in the glovebox these days.
Internet search engines (like Google) can be your friend. They can find online downloadable OMs, too.
You could hire this guy....probably works cheap. "Don't fear the Repair" (Blue Oyster Cult)
Reply
Old Jan 5, 2026 | 02:07 PM
  #10  
Mark9's Avatar
Mark9
Burning Brakes
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Nov 2022
Posts: 1,046
Likes: 1,108
From: Western Mass
Default

If you have to pump the pressure tester "forever" to get any pressure, it means there's a bunch of air still in they system that you're trying to compress. Once it's filled properly it doesn't take many pumps to get a good pressure reading. I found this when installing the V09 radiator. Running the car at 3000 rpm for 30 seconds then letting it idle and repeating a few times will help move any air through the system.
Reply
Old Jan 5, 2026 | 02:23 PM
  #11  
X25's Avatar
X25
Sr.Random input generator
Supporting Lifetime
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 7,773
Likes: 2,210
From: Sammamish, WA
Default

Originally Posted by Mark9
If you have to pump the pressure tester "forever" to get any pressure, it means there's a bunch of air still in they system that you're trying to compress. Once it's filled properly it doesn't take many pumps to get a good pressure reading. I found this when installing the V09 radiator. Running the car at 3000 rpm for 30 seconds then letting it idle and repeating a few times will help move any air through the system.
I've also had a similar experience when I installed the additional radiator. I've pretty much done it how it was done on C5/6/7 Corvettes: fill it to the top, crank it, then start it while filling it back to the top, revving up 2K+ RPM at times, until it no longer accepts anything. Then I keep checking the level for the next few days after drives, and that's it.
Reply
Old Jan 5, 2026 | 03:45 PM
  #12  
RKCRLR's Avatar
RKCRLR
Race Director
Liked
Loved
Community Favorite
Top Answer: 5
 
Joined: Aug 2016
Posts: 12,710
Likes: 10,137
From: Garden Valley CA
Default

The OP asked about a Z06 but I'll post these service manual shots for a Stingray that someone else had posted. And some tech tips.
Attached Files
File Type: zip
Coolant drain and refill.zip (7.04 MB, 21 views)
Reply

Get notified of new replies

To Coolant replacement procedure





All times are GMT -4. The time now is 12:21 PM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE