dexcool, or not dexcool?

What are opinions or dexcool; leave it in, or change to green variety?

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I work in a parts store and every car or truck I see with dexcol in it has a corroding problem. I have also seen that GM is being sued over using dexcol. I guess that if it was me I would flush the cooling system and go to green.
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donald diehl wrote:

I put 80k on my s10 before trading it in on my silverado and didn't have any corroding problems. Didn't ever get around to flushing it either. One of the dexcool sites says it reacts with air so its best to keep the overflow tank overfull and replace the radiator cap with a good stant one. I did both and never got any of the sludge or gelling crap.
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DExcool is not the culprit people think it is. I don't think you should run it for 150k like the manuial says but I wouldn't change it out for green. One big issue is a little green with dexcool will make sludge so on the off chance you don't get it all out you could make a bigger mess of things. Prestone now has "Big Yellow" which is supposed to be safe for anything and mix with anything. Next change it's what I'll use. Larry

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Lets See DEXCOOL
Gm Stands behind Dexcool. The reasoning is that They KNOW it will EAT your Gaskets. Well when it Eats thu your Head gasket or Manifold gasket.. 60% of you will say it is too expense to Repair the vehicle , and Rush right out and Buy yourself a NEW GM PRODUCT !!
DEXCOOL is The BEST SALEMAN GM HAS !!
jdoe wrote:

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jdoe wrote:

should run

green.
the off

things.
anything and

variety?
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Change it as quickly as possible.....It ate through the manifold gasket of my 96 4.3.....I wouldn't give you a nickel for it!

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Hummm, what the heck is dexcool? I just bought a new 04 2500HD does it have this Dexcool in it? This is news to me. Sounds like I should be getting rid of it.
cew wrote:

variety?
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You have Dexcool but don't worry about it. Just keep the reservoir full and be certain to add with Dexcool and not the old green stuff. The gasket problem is with late 90 and perhaps with early 2000 cars.
http://www.penray.com/bulletins/dexcool.htm

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Thanks Rich but I have a 01 Chevy Silverado 1500, an 02 Pontiac TA WS6, and my girl friend has an 02 Grand Am GT all in addition to the 04 2500 HD I just bought. The WS6 I have is a long, long term relationship. I never plan on selling this car. At this point all I want to know is how to flush this crap out of my cars and replace it with the stuff that has been working well for decades.
Anyone know the best, most complete and safe way to flush this crap out of the cooling system and replace it with the green stuff?
We usually get our oil changed at Jiffy Lube or some such place. How long do you think it will be before one of the guys working there tops off the coolant with some non-compatable stuff.
Coolant use to be simple, everyone used the green stuff. I'm sure there is some great reason why GM went to Dexcool, anyone know what that is? More expensive? unique to GM so you have to buy their stuff and pay triple?
Rich256 wrote:

full and

gasket
it
be
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There are many sites on Dexcool. Many about the lawsuits and many about what it really is: It seems to me that there are dozens of forums that beat the issue to death without any real conclusion.
What GM says: http://www.imcool.com/articles/antifreeze-coolant/dexcool-macs2001.htm
http://www.penray.com/bulletins/dexcool.htm
I have not and do not intend to change to the old stuff but I also maintain the level myself. You can buy most anywhere, including WalMart.
There is also a question as to if you might void the warranty if you change before it expires.
The problem seems to be with particular models and years where the coolant was not compatible with the gaskets. Seems to even be a question there. Also it appears to be very important that it not be allowed to get low, getting air into the system.
Sad part is that there is a huge group of trial lawyers out there willing to sue for anything.

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Rocketman wrote:

The Switch is because the orange is supposed to be better on aluminum parts. You will do far more damage to your vehicles taking them to jiffy lube than you will leaving in the orange coolant, if you care about any of them change your own oil.
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One of the guys that i work with has an 04 trailblazer and it already has corroding in the cooling system along with gelling. He took it to the dealership and they told him nothing waswrong with it. What a joke. They just didn't want to admit that dexcol is no good. I have a friend that works at a GM dealership and he told me that dexcol eats at the gaskets and at the aluminum intake. I have had to replace intake gasket, water pump and radiator on a 97 GM. And working at a large parts distributor I see this day in and day out on GMS that are 95 and newer with dexcol in them. GM can say what they want, I see it with my own two eyes all to often. Yes there are a bunch of new coolants that are compatible with dexcol. One of them is the BIG YELLOW bottle by prestone. and there are several others. Just look at the bottle and it will tell youif it is compatible.
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