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Old 03-07-2011, 02:42 PM   #1
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Is using Dex-Cool...cool?

With a planned extended trip this summer and the fact that the MH chassis is now 7 years old(28K miles), I was thinking about changing the radiator coolant and changing the upper and lower hoses. The fluid is orange in color and I think it is Dex-Cool. I pulled up Dex-Cool and found this...

Consumer complaints about DexCool in GM Engines

Holly cow! Should I stop using this stuff or has Dex-Cool fixed what seems to have been a BIG problem in the past?? My W-22 has the aluminum radiator so I guess I have to use something that is compatable...we've had no problems as of yet. What do you think? Bob
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Old 03-07-2011, 02:48 PM   #2
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after 5 years in my old chevy chassis i changed over after flushing the system to prestone that is good for any system.
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Old 03-07-2011, 04:12 PM   #3
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We found out about this coolant/gasket problem about 4 years ago. We have repaired many GM vehicles with gasket leak problems. We ALWAYS switch the vehicle over to Prestone All Makes / All Models coolant.
(will blend ok with any small leftover dex in motor)

We use a flushing machine to do it, so it will get the most old coolant out.
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Old 03-07-2011, 07:08 PM   #4
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I did notice that in the hoard of complaints in the link were all GM cars and PUs. Has anyone experienced the gasket problem using Dex-Cool in their MHs? Thanks, Bob
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Old 03-07-2011, 07:13 PM   #5
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With a planned extended trip this summer and the fact that the MH chassis is now 7 years old(28K miles), I was thinking about changing the radiator coolant and changing the upper and lower hoses. The fluid is orange in color and I think it is Dex-Cool. I pulled up Dex-Cool and found this...

Consumer complaints about DexCool in GM Engines

Holly cow! Should I stop using this stuff or has Dex-Cool fixed what seems to have been a BIG problem in the past?? My W-22 has the aluminum radiator so I guess I have to use something that is compatable...we've had no problems as of yet. What do you think? Bob

Hello,

I bought my wife a 2006 Chevy Impala in 2006. Last year, we had severe overheat problems. Took it to the dealer, and the "Dealer" told me that the intake gasket and head gasket had been damaged by the "dex cool" anitfreeze. We had an extended warranty on the car, so the fix was not that expensive for us, but had I not had that, it would have cost a fortune. The tech at the dealership told me that dex cool will eat up the inside of an engine.....I'd change that crap immediately!
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Old 03-07-2011, 07:58 PM   #6
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Guys ..... My motorhome is about 9 years old and rapidly approaching 90,000 miles all on Dexcool. Properly maintain your system, and your system will take care of you.
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Old 03-08-2011, 07:33 PM   #7
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Guys ..... My motorhome is about 9 years old and rapidly approaching 90,000 miles all on Dexcool. Properly maintain your system, and your system will take care of you.
I agree Mike, all 6 GM vehicles we have owned/own have used Dexcool with no problems.

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Old 03-08-2011, 09:07 PM   #8
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You guys are scaring me too. But I have a '00 Chevy and '05 MH with Dex cool and no problems yet. C DOT uses an orange antifreeze in their trucks, I guess it's like dex cool.

Is it a problem to mix green and orange antifreeze? Seems like I heard it was not good but I'm not sure.
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Old 03-09-2011, 12:34 AM   #9
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I change my dexcool with every engine, so it dont go bad.
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Old 03-09-2011, 01:02 AM   #10
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I change my dexcool with every engine, so it dont go bad.
So you dont use the dexcool from your old engine in the new one??











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Old 03-09-2011, 01:08 AM   #11
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I know people have different ideas on brands, but I use Peak.. Peak Global Lifetime specifically. Its a non-2eh, phosphate and silicate free coolant that is actually the same that comes in Audi's and Mercedes's cars that usually costs $13 a Liter..

2-eh is the ingrediant in Dex-Cool (and others) that has been linked to early gasket failure... Phosphates mix with hard water (if you have to top off at a gas station) and creates clogs.. Silicates is what eats your water pump bearings.

PEAK GLOBAL® LIFETIME® Antifreeze & Coolant

It is a recommended product replacement for Dex-Cool and meets GM6277M and GM1825M specs.

http://www.peakantifreeze.com/pdf/sp...l_lifetime.pdf

Final Charge is the commercial diesel product..

http://www.peakantifreeze.com/antifr...l_charge.shtml
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Old 03-09-2011, 01:38 PM   #12
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Don't mix the 'green' with the dex, as it will cause gelling. That's why we use a machine to flush out the dex, then use the 'all-makes, all-models' stuff. There will always be a small amount of coolant in the engine that you just can't get out, so this stuff mixing with any coolant, thus, no gelling.
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Old 03-09-2011, 07:19 PM   #13
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I believe Prestone says you can mix thier product with Dex-Cool.

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Old 03-09-2011, 07:44 PM   #14
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I believe Prestone says you can mix thier product with Dex-Cool.
Dieselclacker, Both of the products that I have that are labeled "Dexcool" full strength and 50/50 are made by Prestone.
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