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06-15-2008, 03:45 AM
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#1
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2005
Location: chokoloskee, fl 34138
Posts: 717
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What is wrong with this Dex Cool. I just read (maybe old news) some people suing GM over Dex Cool. I have a new Nissan for a toad and it has green antifreeze. My last two Silverados had Dex Cool. I am condidering changing to the green stuff?????????
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2016 Dynamax DX3
USCG Ret BMCM
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06-15-2008, 03:45 AM
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#2
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2005
Location: chokoloskee, fl 34138
Posts: 717
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What is wrong with this Dex Cool. I just read (maybe old news) some people suing GM over Dex Cool. I have a new Nissan for a toad and it has green antifreeze. My last two Silverados had Dex Cool. I am condidering changing to the green stuff?????????
__________________
2016 Dynamax DX3
USCG Ret BMCM
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06-15-2008, 06:40 AM
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#3
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Senior Member
Join Date: Apr 2004
Posts: 182
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I think the problem with Dexcool is people believing that you can leave coolent, any coolent, in for 5 years or 50,000 miles and expect good things. I use Dexcool but I still change it every year. We're talking about very little money and time here and if folks can't devote that much attention to something as expenssive as a motorhome...need I say more?
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06-15-2008, 07:16 AM
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#4
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,643
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I recently have had the cooling system serviced and the coolant was drained and restored using Prestone(brand) Dex-Cool.
I serviced my system at about the 4 year mark with 50K miles indicated. I also changed the T-Stat and radiator cap.
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03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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06-15-2008, 06:31 PM
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#5
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,499
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Dex Cool is made up of:
1) Ethylene Gylcol - 97% by weight
2) Diethylene Gylcol - 1-5% by weight
3) Potassium 2-ethyhexnoate - 1-5% by weight
It's #3 that some folks don't like.
OBTW - Prestone is owned by Honeywell the same folks that own Fram.
One more thing.... Honeywell also makes Wal Marts Super Tech Antifreeze which has the same formula as Prestone's regular antifreeze.. It just cost less.
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Dale
AKA - Oemy
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06-19-2008, 12:37 PM
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#6
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Senior Member
Workhorse Chassis Owner
Join Date: Mar 2007
Posts: 328
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Dale
How do you know Walmart antifreeze is made by Prestone with the same chemicals?
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2005 30' Rexhall Vision, W-22 chassis, 19.5 tires, 208'' factory WB, 6000 CCC
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06-19-2008, 01:36 PM
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#7
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,499
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Well if you go to the Wal Mart MSDS and look up Standard Prestone Antifreeze and Wal MArts Super Tech Antifreeze you see that they both are made by Honeywall and have the same formula. On the super Tech MSDS it says Prestone!
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Dale
AKA - Oemy
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06-19-2008, 01:46 PM
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#8
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Senior Member
Texas Boomers Club
Join Date: Dec 2003
Location: Mo/Texas
Posts: 3,553
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At change time, can I replace the Dexcool in our 8.1 with the good old fashion green stuff without harming the engine?
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06-19-2008, 03:16 PM
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#9
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Senior Member
Join Date: Feb 2003
Location: Jarrell, TX 76537
Posts: 4,499
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That's what I did. Go to my web site and see how I did it and I didn't remove any block plugs or lower radiator hose.
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Dale
AKA - Oemy
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06-20-2008, 05:06 AM
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#10
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Senior Member
Texas Boomers Club
Join Date: Dec 2003
Location: Mo/Texas
Posts: 3,553
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Will do. Thanks. 
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