Coolant change!Need help.
Burning Brakes
Joined: Jan 2005
Posts: 1,216
Likes: 1
From: westminster California
Block needs to be drained to get all the dexcool out. the driver's side block drain is just ahead of the engine mount. it is a very large plug, because this is also where they install a block heater option. the passinger side is a pain. you must remove the starter to get to it. it is a small plug, easy to access when the starter is removed.
Team Owner
Joined: May 2000
Posts: 53,810
Likes: 5,635
From: Plantation Florida USAF(Retired) 1966-1990
U.S. Air Force
St. Jude Donor '05 thru '26
NCM Sinkhole Donor
This why I have the dealership do it with there machine that sucks out all the old fluid and then pumps fresh fluid back in with no air bubbles.
I can do it myself, but I know I won't be able to get all the old fluid out.
I see you are over the pond, and dealership might be hard to get to that has proper equipment.
I can do it myself, but I know I won't be able to get all the old fluid out.
I see you are over the pond, and dealership might be hard to get to that has proper equipment.
SUBVETTE
Joined: Jul 2006
Posts: 3,841
Likes: 93
From: San Diego CA
Drain, refill with distilled water, run engine, drain again, refill, run engine ........etc until clear fluid comes out, usually about three cycles will do it. Then fill with final Dexcool mixture.
Last edited by SUB VETTE; Jun 1, 2015 at 03:07 PM. Reason: sp
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Team Owner
Joined: Sep 2000
Posts: 25,022
Likes: 2,714
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Suggest running it until the coolant temp gets up above 200'F and you can get some heat out of the heater, so everything is fully circulated.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Jan 2009
Posts: 2,466
Likes: 104
From: Texas
Or maybe I know that if you want it done right, or done at all you better do it yourself!
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,822
From: Charlotte, NC (formerly Endicott, NY)
That is what I do except I use clean drinkable tap water like the Service Manual indicates. No need for distilled or deionized water.
Instructor
Joined: May 2014
Posts: 218
Likes: 29
From: Midcoast Maine USN, Retired ('69 to '92)
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
The cooling system doesn't benefit from distilled water any more than the human body benefits from drinking it. If the water has no minerals at all, it will pull minerals from the interior of the system...simple. Same concept works for maintenance of swimming pools and hot tubs. Cooling system temperatures are higher, so the process is accelerated.
Pro
Joined: Mar 2008
Posts: 633
Likes: 13
From: Hurley New York
Just remember they'll be some liters of that clear water left behind in block. So if you add 50/50 premix it'll get diluted some more. I like to divide total capacity by half & add that amount of straight coolant directly. It'll mix with the water in block to proper mix. Add more plain water to top off if needed.
Race Director
Joined: Jan 2011
Posts: 11,973
Likes: 463
From: Tonawanda New York
Just remember they'll be some liters of that clear water left behind in block. So if you add 50/50 premix it'll get diluted some more. I like to divide total capacity by half & add that amount of straight coolant directly. It'll mix with the water in block to proper mix. Add more plain water to top off if needed.