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#1668576 - 11/12/09 03:19 PM Re: dexcool alternative [Re: mechanicx]
built Offline


Registered: 10/24/06
Posts: 232
Loc: southern ohio
I'll check them out,thanks.

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#1668828 - 11/12/09 06:56 PM Re: dexcool alternative [Re: built]
bullwinkle Online   confused


Registered: 10/09/04
Posts: 3970
Loc: Cincinnati, OH, USA
GO-5 is completely different-no 2-EHA inhibitor, which is the plastic-eating, rust-sludge forming bad boy of Dexcool. It does have some silicate, which is why it isn't generally recommended in Japanese mfr.'s cars-they are silicate-free phosphate inhibited.
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#1672110 - 11/15/09 12:25 PM Re: dexcool alternative [Re: bullwinkle]
Nitrox Offline


Registered: 07/14/03
Posts: 147
Loc: Ft Lauderdale, FL
Originally Posted By: bullwinkle
GO-5 is completely different-no 2-EHA inhibitor, which is the plastic-eating, rust-sludge forming bad boy of Dexcool. It does have some silicate, which is why it isn't generally recommended in Japanese mfr.'s cars-they are silicate-free phosphate inhibited.


You're saying Dexcool causes those issues? I thought Dexcool evolved into a decent coolant, but I haven't really researched the topic.

I recently purchased a 2007 GM vehicle that runs Dexcool, so I, too, am examining alternatives to the product.

It appears the Amsoil coolant is compatible with all forms of coolant and additives. Perhaps that is a good alternative. I've had great success with all of their other products.
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#1673533 - 11/16/09 11:36 AM Re: dexcool alternative [Re: Nitrox]
AzFireGuy79 Offline


Registered: 03/08/08
Posts: 1286
Loc: Arizona
Dexcool is more than fine in vehicles that do not circulate coolant through the intake( most of the GM v-6 and engines had lower intake failures and some of this was blamed on Dexcool, although GM never admits that most of their designs blow)And I own a few GM's so I can say this and have plenty of experience working on some of their poorly engineered offerings!! The LSX(one of my favs second to the LT-1) and many others will go way past 100K with Dexcool, without incident as long as the surge tank cap is intact and not leaking. Usually it should be replaced about every 50K. Air getting into the system is what mainly gave Dexcool a bad name.


Edited by AzFireGuy79 (11/16/09 11:39 AM)
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#1674050 - 11/16/09 06:34 PM Re: dexcool alternative [Re: AzFireGuy79]
onion Offline


Registered: 02/04/07
Posts: 2097
Loc: kansastan
Well, that and the fact that gobs of nasty sludge form when air gets into the system. That didn't do Dexcool's reputation any favors.
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#1675767 - 11/18/09 12:35 AM Re: dexcool alternative [Re: onion]
built Offline


Registered: 10/24/06
Posts: 232
Loc: southern ohio
Do the prestone all makes coolant have the exact same amounts of 2-EHA inhibitor and would be the same issues as dexcool except at a lower price?

Is there a coolant with lower amounts that would a little safer, or is that kinda like just being kinda infected with a disease.

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#1675788 - 11/18/09 01:16 AM Re: dexcool alternative [Re: built]
mechanicx Offline


Registered: 10/23/09
Posts: 8576
Loc: Ohio
Did you see my thread about Saturn and Prestone all makes/all models a similar question came up? My thinking is Prestone am/am is has the same or less 2-EHA (I'm betting less if anything) as Dexcool for the inhibitor additive, so it couldn't potentially cause more gumming than Dexcool. Another poster said am/am caused gumming in an engine that Dexcool didn't confused shrug.

My view is if am/am is a dex-clone, and I think it is, then might as well go with Dexcool and get the full amount of inhibitor and there'd be no question of whether it was truely Dexcool used if a problem should arise. And if I didn't trust Dexcool for an application, I would avoid using Dexcool and it's clones.

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#1676222 - 11/18/09 12:08 PM Re: dexcool alternative [Re: mechanicx]
bigmike Offline


Registered: 06/05/09
Posts: 3239
Loc: Florida
I finally got 4 gallons of Peak Global Lifetime. I plan to do a flush in my Silverado soon. I still think this is the best alternative to Dexcool.
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2006 Chevy Silverado LT 4.8 - QS 5w30, Napa Gold
2009 Honda Accord LX-P 2.4 - QS UD 0w20, P1 14610

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#1676236 - 11/18/09 12:22 PM Re: dexcool alternative [Re: bigmike]
ls1mike Offline


Registered: 06/14/08
Posts: 3014
Loc: Bremerton Wa
Why would you change it on an LSX motor and run the risk of combining the two and guming it up?
Everyone here is like "Oh no Dex Cool the sky is falling"
If you own a 3.1, 3.4, 4.3 or 3800. I might be a bit concerned as it has caused problems in those engines.
But an LSX motor which is a 4.8 Dex cool has not caused any problems.
Check out LS1tech.com, LSXnation.net, or fullsizechevy.com. That it is where all the Dex cool experience is in regards to the 4.8, 5.3, 6.0, 5.7, 6.2.(Corvette, Camaro, Firbird, Silverado, Sierra, Grand Prix GXP etc etc)
You have no fluid in your intake and everything but your block is Aluminum.
Your truck your money, but Dexcool is all I have run in my LSX based motors and is what most folks run in theirs. My 04 5.3 went 120,000 miles on the original Dex cool before I changed it out looked as good as new.


Edited by ls1mike (11/18/09 12:23 PM)
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#1677246 - 11/19/09 09:10 AM Re: dexcool alternative [Re: ls1mike]
bigmike Offline


Registered: 06/05/09
Posts: 3239
Loc: Florida
Originally Posted By: ls1mike
Why would you change it on an LSX motor and run the risk of combining the two and guming it up?
Everyone here is like "Oh no Dex Cool the sky is falling"
If you own a 3.1, 3.4, 4.3 or 3800. I might be a bit concerned as it has caused problems in those engines.
But an LSX motor which is a 4.8 Dex cool has not caused any problems.
Check out LS1tech.com, LSXnation.net, or fullsizechevy.com. That it is where all the Dex cool experience is in regards to the 4.8, 5.3, 6.0, 5.7, 6.2.(Corvette, Camaro, Firbird, Silverado, Sierra, Grand Prix GXP etc etc)
You have no fluid in your intake and everything but your block is Aluminum.
Your truck your money, but Dexcool is all I have run in my LSX based motors and is what most folks run in theirs. My 04 5.3 went 120,000 miles on the original Dex cool before I changed it out looked as good as new.


I'm not sure why it would gum things up. Even without a flush, I wouldn't expect it to gum up - but I'm doing one anyway with distilled water.

My parents have a van with Dexcool that has 100k on it and Dexcool looks great! Then they had to replace their water pump and intake gaskets for $1200. I'm too thrilled about the stuff, personally.

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2006 Chevy Silverado LT 4.8 - QS 5w30, Napa Gold
2009 Honda Accord LX-P 2.4 - QS UD 0w20, P1 14610

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#1678558 - 11/20/09 10:46 AM Re: dexcool alternative [Re: bigmike]
AzFireGuy79 Offline


Registered: 03/08/08
Posts: 1286
Loc: Arizona
100k for a water pump is decent for a GM from what I have seen. I don't think you can ever come close to proving or even suggesting DEXCOOL had anything to do with either failure. If GM engineers would have improved the intake gasket design from the get go, it would have never been an issue in the first place. A simple change in gasket material would have solved this "issue".

I own a few GM's and do alot of work on the LSX platform as well as the LTX. I have NEVER seen an issue that was linked to DEXCOOL. Leaking radiator caps, yes but that's a maintenance item IMO. Change it at proper intervals and life is good.


Edited by AzFireGuy79 (11/20/09 10:47 AM)
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#1678613 - 11/20/09 11:53 AM Re: dexcool alternative [Re: AzFireGuy79]
bigmike Offline


Registered: 06/05/09
Posts: 3239
Loc: Florida
I'd agree with the water pump. Not the $1200 intake repair, however. Unfortunately, they were outside the window of the class action lawsuit and had to pay all out of pocket.

As for the LSx motors, I haven't researched the topic in depth enough to comment. I fail to see why this matters? I lean towards using a product that doesn't have a varied history.
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-Mike

2006 Chevy Silverado LT 4.8 - QS 5w30, Napa Gold
2009 Honda Accord LX-P 2.4 - QS UD 0w20, P1 14610

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#1679497 - 11/21/09 12:34 AM Re: dexcool alternative [Re: bigmike]
AzFireGuy79 Offline


Registered: 03/08/08
Posts: 1286
Loc: Arizona
Use whatever you like. My point is that Dexcool is a perfectly good coolant in systems that do not have a [censored] design for a gasket and lackluster radiator/surge tank caps. Take the LSX and LTX for example, neither really ever had any coolant related issues. Meaning the cars that did(smaller V-6's and such that passed coolant through the manifold) suffered from a design flaw (gasket material).

Again, use whatever you have faith in. Wow, $1,200 for an intake repair!!!! Man thank god I do all of my own work. I have lost touch with todays labor rates for sure! LOL


Edited by AzFireGuy79 (11/21/09 12:35 AM)
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