Dex-Cool
Thread Starter
Racer
Joined: Nov 2006
Posts: 490
Likes: 10
From: Atlanta Ga
Dex-Cool
Has anyone used the pre-mixed dex-cool? If so, are you satisfied? If it's not a good idea for a vette; why?
Looking to change mine this week and would like to know as this seems to be about the same cost as the straight stuff.
Looking to change mine this week and would like to know as this seems to be about the same cost as the straight stuff.
Advanced
Joined: Dec 2007
Posts: 57
Likes: 1
changed the coolant in my 2000 coupe with the 50/50 pre-mixed a few months ago.....no problems yet and the weather here in jersey has been in the upper 90's.
Le Mans Master
Joined: Aug 2009
Posts: 5,197
Likes: 190
From: ALL governments are legalized mobsters, so doesn't matter where I live :(
A lot of threads on this subject...get ready to hear several different opinions. Dex-cool premix will be fine. I opted to with another coolant that was dex-cool compatible. I did this because I was afraid that dex-cool in the long run would become corrosive and ruin seals. (This happened on GM's v6 3.1 and I think 3.4 engines)
As long as you maintain the factory maintenance period to change your coolant you'll be fine.
As long as you maintain the factory maintenance period to change your coolant you'll be fine.
Advanced
Joined: Jul 2007
Posts: 56
Likes: 1
From: Daly City CA
i just got the pre-mix version because i'm too lazy to get distilled water and mix myself. if you are meticulous about maintenance and want a better value get the straight dexcool and mix with distilled water.
there is no difference between the two except the 50/50 already has water in it.
if you plan on using tap water with the straight stuff, just get the 50/50 instead and be done with it.
btw, 2 gallons was just about right.
there is no difference between the two except the 50/50 already has water in it.
if you plan on using tap water with the straight stuff, just get the 50/50 instead and be done with it.
btw, 2 gallons was just about right.
Administrator
Joined: Mar 2001
Posts: 367,704
Likes: 24,672
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
No reason not to use it - saves you from having to mix it yourself.
Melting Slicks
Joined: Jul 2006
Posts: 2,332
Likes: 31
From: Silver Spring MD
100% plus a garden hose worke for me after a good flush
Since the system is almost impossible to drain completely I flushed using a garden hose with radiator drain open and engine running. Did this till clear running out of radiator. Then let drain as much as possible with car front end pitched lower than rear. Used regular Dexcool full strength and added till radiator full. Started engine and waited for thermostat to open. Added more Dexcool to fill. About 6 or 7 quarts will protect the car to -20 F. Not in Iowa anymore where temps really get that low but it is surely good enough for MD. Don't see the need for distilled water.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
