just cause its free haha and water wetter and distilled water 
View Poll Results: What coolant do you use in your LSx?
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Offical Dex-Cool vs. Green Thread
I use dexacool. Just a roomor but a machine shop once told me if you pop a head gasket or somthing and the dexacool getsin the oil the dexacool has somewhat like "lubricants" in it and he claims its still not good but it wont eat up bearings as fast as regular green stuff will
TECH Regular
Joined: Mar 2007
Posts: 455
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Dex-Cool was actually created mainly for engines with Iron Blocks and Aluminum Heads.It was formulated with a corrosion inhibitor package to prevent Electrolysis.Electrolysis is when two dissimilar metals in a liquid(coolant)can carry an electric current.The result is corroding.
Recently,law suits over GM Dex Cool is increasing though.Many GM owners claim that GM Dex Cool is turning to sludge and destroying their engines.
http://www.consumeraffairs.com/news0...m_dexcool.html
Recently,law suits over GM Dex Cool is increasing though.Many GM owners claim that GM Dex Cool is turning to sludge and destroying their engines.
http://www.consumeraffairs.com/news0...m_dexcool.html
Last edited by lovescamaros28; May 25, 2007 at 05:40 PM.
TECH Junkie
Joined: Aug 2006
Posts: 3,920
Likes: 676
From: Western North Carolina
I've used Dexcool in two GM minivans and in two F-body cars for over 10 years. Never an issue with anything. I have replaced and flushed the Dexcool every 30,000 miles as recommended by knowledgeable mechanics that make their living working on GM products. It is preventative maintenance to avoid any potential problems. Even the dealerships have $99 specials so why risk hundreds, or thousands of dollars in repairs for an occasional flush? Do owners really think any coolant will last 100,000 miles, especially in a hot weather state like FL or TX, etc.. That almost defies common sense despite what anyone tells you. It is basically the same as an oil change, isn't it? Some manuals say you can drive 6 or 7,000 miles between changes. Sorry, I still change mine every 3,000 miles. Again, no issues. A few bucks up front is way batter than a huge bill trying to eke out the limits of a particular product. To each his own I guess.
Looks like I'm switching to green when I get my car back.
I don't think its a question of whether the system is closed or open, but of the level. If the level is where it needs to be the parts will always be submerged, if it is low and metal is exposed then there are issues.
Originally Posted by 01pewterbird
well thats shitty. Now if air is the enemy of dex-cool, why is it run in the f-bod cooling system which isn't sealed??
I know the impala ss board members were having problems with the dexcrap and many many switched to the green. This was partly due to the stop leak pellets the factory used though.
I know of at least one mechanic i trust that recommends a switch to green. My 99SS was converted to green prior to me buying it. Green stuff is going in my new motor too. Timne tested and proven in my opinion.
I know of at least one mechanic i trust that recommends a switch to green. My 99SS was converted to green prior to me buying it. Green stuff is going in my new motor too. Timne tested and proven in my opinion.
Last edited by BIG BAD BLACKSS; May 28, 2007 at 02:44 AM.
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Joined: Nov 2003
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From: Wichita KS / Rancho San Diego
Originally Posted by NC01TA
I have replaced and flushed the Dexcool every 30,000 miles as recommended by knowledgeable mechanics that make their living working on GM products. It is preventative maintenance to avoid any potential problems.
Originally Posted by cantdrv65
This is the final word folks. In my experience this sounds SPOT ON....Motor age magazine is an EXCELLENT and HIGHLY respected source of tech information. Like I said before Dexcool issues are regarded as fact in the automotive repair world. Anything BUT Dex in all my rides. 
I've been a "mechanic" for about 15 years now and in the long run dex is crap but thats if you try and get your 100k out of it. My theory is GM designs this coolant they say will go 100k, by then your warranty is way out and there service centers are way full, intake leaks on 3.1-3.8 mid-sized and the vortech 96-2000 trucks; just about everyday of the week and twice on Sunday! I like the new global (yellow) coolant. But time will tell. In the begining I thought the brown sludge build-up was stop-leak but later learned it was dex-cool when it lost it's properties. Like the others said if your changing your coolant every 30k anyways just use the green w/ some waterwetter. I think if your climate permits you can run straight water with waterwetter. Blowing out S-10 heater cores with brown dex-cool sludge, another favorite.
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Joined: Jul 2005
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Originally Posted by Trust
Looks like I'm switching to green when I get my car back.
I don't think its a question of whether the system is closed or open, but of the level. If the level is where it needs to be the parts will always be submerged, if it is low and metal is exposed then there are issues.
I don't think its a question of whether the system is closed or open, but of the level. If the level is where it needs to be the parts will always be submerged, if it is low and metal is exposed then there are issues.
Originally Posted by 5150mechanic
Blowing out S-10 heater cores with brown dex-cool sludge, another favorite.
If you go to WalMart and compare the Prestone products you will find that the universal green, dexcool and dexcool compatible coolants all have the same ingredients. I'm not sure what is different other than the color.
