DEXCOOL CLASS ACTION
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D.P. Mulvey in Central VA.

There is a big trend here. That is, GM products seem to have a horrible problem with the coolant of their own design. It seems primarily caused by air introduced into the cooling system where it should not be. Some GM engines (Blazer is one) had problems with the intake manifold gaskets leaking and allowing air into the system. And probably other places too.

I only am interested in this because it appears as if it causes problems in vehicles where the cooling system has issues, whether known to the owner or not.

Common sense says to avoid anything that could cause problems, but it doesn't mean that Dexcool is causing problems for everyone. I don't think that GM is the only manufacturer to be using long life coolant like that, although they seem to be the ones having the most problems with it.
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Chris Herbst, near Chicago.

You seem to have hit on something here. I truly believe in a product with a long life, especially from an environmental and reduced maintenance cost standpoint. However, when the product can only perform in a specific environment (i.e. a (nearly) completely air free system) and any deviation from that environment destroys the very thing it is supposed to protect....then I have a problem. I appreciate your insight. Based on that, I will stick to the annual system flush/refill at my local mechanic. It has worked for the last 12 years...no need to tempt fate now.

Thanks again.
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D.P. Mulvey in Central VA.

Thanks for the info.
I just spent two days reparing the damage and cleaning up the mess left by dexcool in a customers blazer.I forwarded the info to him.
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-------Robert, '93 940t, '90 240 wagon, '84 240 diesel (she's sick) , '80 245 diesel

"Your email message has been idle and this link has become inactive. To access the link, close this window and return to your MSN Hotmail Message. Then click the browser's Refresh button or close your message and reopen it. "

i think you need to cut and paste the text instead.
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Kenric Tam
1990 Volvo 740 base sedan (B230F)
My Volvo 'Project'

Sorry about that. I did not realize the Sir William of Redmond product would have jerked the link around that fast. Worked yesterday. Used a link as the URL was about 3.5 lines long. Deleted the article from my PC. Google DEXCOOL class action for a plethora of info.

Again, regret the inconvenience.
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D.P. Mulvey in Central VA.

hey, no prob. :)
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Kenric Tam
1990 Volvo 740 base sedan (B230F)
My Volvo 'Project'

Second Steve's experienced and knowledgeable comments. Dexcool has worked for me for a long time.

It is a poor performer where the level is allowed to run low. I've never had any visible side effects from the stuff, and I've been running it for a long time as well.
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Chris Herbst, near Chicago.

Dexcool is controversial. I can say that it has performed flawlessly in the six Volvos I have owned or driven, over a period going back seven years. the one exception was with an aftermarket Nissens soldered brass radiator, which leaked after one year.