Dex-Cool
Instructor
Joined: Jun 2004
Posts: 198
Likes: 0
From: Long Island NY
Originally Posted by jthoresen
Has anyone changed there Dex-Cool? I’ve heard rumors of lawsuits building against GM for this and was told it has been reformulated 6 times in an attempt to get it right.
Le Mans Master
Joined: Jan 2001
Posts: 6,450
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
It's my understanding that the problems occur when you mix Dex with regular anti-freeze OR you have a mixture of water to Dex that's not 50%.
Other than that the Dex is problem free.
Tom
Other than that the Dex is problem free.
Tom
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
All problems with DexCool have been traced to either mixing with non-DexCool anti-freeze, or not keeping your coolant system completely full. That was the conclusion that GM and Texaco came to. Keep your coolant system full, don't mix coolant types, and you wont have problems.
Melting Slicks
Joined: Nov 2003
Posts: 2,608
Likes: 7
From: the GOCC are everywhere, even back from "band camp"
I hear those rumors, but never see anything. It works fine in all my vehicles; Dex-Cool and distilled water at 50/50. No early cooling system failures here. AND NEVER MIX THE TWO TYPES!!!
Bruce
Bruce
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Burning Brakes
Joined: Apr 2004
Posts: 1,029
Likes: 3
From: Seattle WA
St. Jude Donor '15
Originally Posted by Rolm
As a side note a local mechanic said he has seen the red stuff turn into this thick honey like consistance after a few years of operation.
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
I have the original Dex-Cool coolant in my 98 Silverado, it has 70,000 miles on it and I've only topped off the overflow bottle twice with a 50/50 misture of Dex-Cool and water. It still looks like brand new and I'll continue to use it as long it looks this way
Drifting
Joined: Mar 2004
Posts: 1,437
Likes: 0
From: UNDER THE HOOD
Originally Posted by runamuk
I have the original Dex-Cool coolant in my 98 Silverado, it has 70,000 miles on it and I've only topped off the overflow bottle twice with a 50/50 misture of Dex-Cool and water. It still looks like brand new and I'll continue to use it as long it looks this way
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Do some research, don't believe all that you hear. I have changed all my cars from the "green" stuff to Dexcool and have been running it for years problem free. I have even drained the systems and looked inside with a boroscope and the block and radiators look like brand new. Keep it full and you will be fine.
