How many people still use Dex Coolant

**Sabrewings** · 10-31-2008

Originally Posted by beastin1

if your still in question about dex cool, then ask your local dealer if any of the new cars come with dex cool in them....they don't, it's not been in any new cars since 04....

Total lie. I worked for a dealer and it's still used to this day. It's even used in the Corvette ZR1 and is now used by other manufacturers than GM. The brand new Malibu my girlfriend test drove the other day had Dexcool in it. Said so on the cap.

Dexcool has problems in our cars because our gaskets from the factory suck. If there were no leaks in the coolant system (even small leaks you can't notice), it won't do that. That's why the only cars that have trouble with it have leaky gaskets, and what's even funnier is that people blamed Dexcool for the gaskets too.

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Dexcool is not the problem if it's forming deposits. You have issues elsewhere and Dexcool is reacting with it.

Point is that plenty cars are out there running Dexcool and will never have that problem. So how can it be to blame?

**beastin1** · 10-31-2008

Originally Posted by Sabrewings

Total lie. I worked for a dealer and it's still used to this day. It's even used in the Corvette ZR1 and is now used by other manufacturers than GM. The brand new Malibu my girlfriend test drove the other day had Dexcool in it. Said so on the cap.

Dexcool has problems in our cars because our gaskets from the factory suck. If there were no leaks in the coolant system (even small leaks you can't notice), it won't do that. That's why the only cars that have trouble with it have leaky gaskets, and what's even funnier is that people blamed Dexcool for the gaskets too.

.

Dexcool is not the problem if it's forming deposits. You have issues elsewhere and Dexcool is reacting with it.

Point is that plenty cars are out there running Dexcool and will never have that problem. So how can it be to blame?

First off, I don't lie!!!! I personally never take my cars to the dealer because they rob you blind and do lousy work, If they still are using it then my appologies for any inaccuracy, my information must have been wrong and perhaps i was mistaken on that one point....did you even bother to look at the links i provided?? especially the first one...so since I'm lying i must ask then, what is the brown sludge that is found only in cooling systems that use dexcool??? and why did gm settle a class action suit if nothing is wrong with it??? and why does every intellectually savy mechanic I know firmly oppose using dexcool??? In my research i have found only a couple people that say dexcool is fine,(with you it's 3) but that number is vastly multiplied by those that have had problems.... In my opinion dex is garbage, i will never use it and will flush it out of any vehicle i may purchase that has it inside....so to each their own....

with that said, does anyone know the proper flushing procedure??? i checked the write up section and found nothing, if anyone knows maybe they could put something together.... I usually just pull the bottom hose and drain, the drain plug has a wierd fitting that takes a tool i've never seen before.... maybe it requires a "DEX TOOL" hahaha lol....

**Sabrewings** · 10-31-2008

Originally Posted by beastin1

especially the first one...so since I'm lying i must ask then, what is the brown sludge that is found only in cooling systems that use dexcool???

A reaction between Dexcool and any trapped air in the system or oil. Due to leaking gaskets.

Originally Posted by beastin1

and why did gm settle a class action suit if nothing is wrong with it???

Because it's cheaper to settle for this than pay legal fees when people keep coming at them. Look at the list of affected cars and all those engines are known for gasket issues. They took the smartest (cheapest) way out.

Originally Posted by beastin1

and why does every intellectually savy mechanic I know firmly oppose using dexcool???

Because they don't know the real reasons behind why it fails. Or they're so set in their ways that anything new is the "devil" and will not work. Green stuff was dropped because it will adversely react with aluminum. Guess what, your engine has aluminum parts.

If you take care of possible leaks, keep your system well maintained (no air), Dexcool will be fine. But I will not use the old green stuff. I don't need it corroding any aluminum parts. If you have some sort of grudge against Dexcool, so be it. Use the universal Prestone stuff.

**beastin1** · 10-31-2008

I too will not use the green...I do use the universal prestone.
regardless you have yet to give me solid reason as to why dexcool is good, in fact you have only convinced me further of it's problematic issues, say its faulty gaskets, well perhaps the gaskets are faulty because of what they retain.... and yes the acidity is caused by the air getting in, but wouldn't you rather use something that doesn't turn to acid????
once again i will post this just this one link, i know the guy who took the time to put it together.... please check it out, and read through everything...same type gaskets, with the dex ones having much lower miles then the other and yet they look much much older.... the results speak for themselves
The potential role of DEX-COOL®

**Sabrewings** · 10-31-2008

Originally Posted by beastin1

well perhaps the gaskets are faulty because of what they retain....

Dexcool has not caused issues in other cars besides the 60* V6 family and the 3800. Two families of engines known to develop leaky gaskets no matter what coolant you run.

Why doesn't it leak in the Corvette? The Solstice? The Tahoe? The Escalade? Saturns? The list goes on. It is because of faulty gaskets and Dexcool is the scape goat.

Originally Posted by beastin1

and yes the acidity is caused by the air getting in, but wouldn't you rather use something that doesn't turn to acid????

This is true. Whenever I need to add coolant, I add the Prestone. But, I haven't been in a rush to flush because my Dexcool isn't giving me any problem because I keep it well maintained. I'm probably a little over half and half between Dexcool and Prestone by now since I did my gaskets.

I have seen that link before, and I've seen gaskets like that on a L67 that had the Dexcool removed after five miles. Those gaskets fail like that, end of story. Not because of Dexcool, but bad design. I refer you back to my argument of why every GM engine doesn't have gasket issues then? The same material was used across the board.