RE: WHO'S HAD GOOD LUCK WITH DEX-COOL
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 7/12/2007 2:09:01 PM
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RCars2
Posts: 896
Joined: 4/22/2007
From: Wisconsin originally but now im in Phx, AZ
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quote:
ORIGINAL: drperry
lol
We tried burning a glow stick that wasn't cracked yet, and it didn't light...
That's what we need! Glowing coolant, so it's easier to find a leak! lol
Actually green coolant flouresses (sp?) when put under a black light. Doesnt glow a huge amount but it definately glows.
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-Rob
"what fell off of where!?!?!"
Repair List:
Fender Rubbing Issue
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Alignment
T-Case <--Fixed Finally
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 7/12/2007 2:36:37 PM
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drperry
Posts: 3896
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From: GP AB CA
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I know, but I mean, just plain glows, all on it's own!
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 7/12/2007 2:55:20 PM
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RCars2
Posts: 896
Joined: 4/22/2007
From: Wisconsin originally but now im in Phx, AZ
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Well you could dilute uranium in there if ya felt like it i guess? Course then your block, truck, and you would probably be glowing too, LOL.
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-Rob
"what fell off of where!?!?!"
Repair List:
Fender Rubbing Issue
Fuel Pump
Alignment
T-Case <--Fixed Finally
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/7/2007 11:52:21 AM
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Psychropod
Posts: 338
Joined: 5/23/2007
From: Baltimore, MD
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Swartlkk (Kyle) said: "Below are the pages from a '96 Owners Manual that I downloaded from MyGMLink.com about the service interval of the cooling system. I hope that one of our members with a '96 still has his/her owner's manual and if possible can scan these pages in for us. I would like to see if they made any changes."
Kyle, I own a '96 Blazer. I will compare your pages to the ones in my manual and let you know.
Raphael
< Message edited by Psychropod -- 8/8/2007 8:55:53 AM >
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Raphael
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/7/2007 1:20:33 PM
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Ted
Posts: 12
Joined: 8/5/2007
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Wisdomracing said:
Water Pump went about 7 weeks ago...changed it and put in radiator cleaner to get rid of the heavy coating of brown **** in the system...ran it like that for about 500 miles when the cap detiorated quite badly (chips all around the seal)..
I'm curious as to how long the instructions said to leave the cleaner in. Most say something like 10 minutes or half an hour. It sounds like you're saying it ate up the rad cap in that 500 miles. It probably didn't do good things to other components.
I think most of the problems are from people never checking or changing their coolant (heck, they don't check or change their oil!) and GM trying to lighten and cheapen the other components that come in contact with Dexcool. Plastic intake manifolds, anyone?
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/7/2007 9:04:44 PM
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Taymacjack
Posts: 518
Joined: 7/18/2007
From: Auschwitz, Oregon
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While dexcool has a sweet twang with a rich aroma, Prestone has rich full bodied flavor with a hint of citrus.
Prestone>Dexcool
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 1995 GMC Jimmy 4x4X2 (I need a outside spare tire carrier...wanna trade for the inside version?)
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/9/2007 2:14:45 PM
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skyblazer
Posts: 40
Joined: 6/6/2007
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rofl! I love this thread already :)
IMHO, i hate the stuff... I have seen the major corrsion issues with Dex-Cool in my radiator... I have have had needed MAJOR cooling systems repair including a new radiator, thermostat and tranny cooler. That stuff corrodes aluminum over a period of time!
I stick with 60-40 Prestone/water and it hasn't failed me since i have been using it now :)
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/9/2007 3:45:20 PM
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swartlkk
Posts: 14299
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From: Waterloo, NY
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Well, of all of the issues that Dexcool has, it's major short coming is much more evident when used in iron block/head applications. I have seen no corrosion issues in any all aluminum engine vehicles. All of the vehicles that have ever been mentioned in any class action suit have been cast iron blocks. The brown mess that results from air entrapment is due to iron rust. Aluminum corrosion is not brown.
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Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/9/2007 4:05:38 PM
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AL
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I disagree with you,i had a 1996 astro van since new,and sold it a couple of months ago,and never had a problem .I changed the coolant every 5 years
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/9/2007 5:29:25 PM
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drperry
Posts: 3896
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From: GP AB CA
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Dex-Cool was used instead of the green stuff, because the green stuff corrodes/eats aluminum if left in there too long... I think that's the reason why GM started using it... Dex-Cool may still corrode aluminum, but it takes a LOT longer before it does, if it does it at all...
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/9/2007 7:53:20 PM
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Megalodon_Al
Posts: 27
Joined: 6/20/2007
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I had a '96 Monte Carlo with Dex-Cool and never had a problem. I sold the car in '02 with over 160000 miles and never changed the radiator fluid. I DID have it checked yearly with my inspection. Each year I was told it was still good and when I would check it myself the color would be fine, never brown at all. I also have it my '99 Blazer and it still looks perfect after 60000 miles and counting.
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/20/2007 6:16:30 AM
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MindlessCorpse
Posts: 45
Joined: 8/20/2007
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Hello and Hiya
I recently bought a 99 Blazer LS. Have had it about a month, when (surprised look) the intake manifold started leaking coolant. Evidently it had been stopped with Bar's Stop Leak, or something similar, and when this broke loose, the leak came back. A friend suggested i try the Bar's myself to see if it would work...it didnt...so....
I started the repairs this weekend, and will be putting it back together today..
The Repairs consist of new gasket's and seals to the upper and lower intake manifold, and related seal's and o-rings
My Question here is this... Do I use Dex-Cool, or regular Coolant?
I already bought two gallons of the Dex-Cool, but havent put it in yet.
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 8/20/2007 8:19:55 AM
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swartlkk
Posts: 14299
Joined: 5/1/2005
From: Waterloo, NY
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If you've read through this whole thread, then you have the information on the pros/cons. It really is up to you. If you maintain the integrity of the cooling system, Dexcool will last longer than the green stuff. But while you're at it, replace the radiator cap with a Stant safety release cap as well as replace the thermostat to ensure that these components will be working correctly for a long time. Also, use only distilled water when you refill the cooling system. Once the repair is completed, put 6 quarts (1.5 gallons) of coolant into the radiator, then fill the system using distilled water. 6 quarts is roughly half the cooling system capacity. Seeing as how it is almost impossible to completely drain the system, it is just easier to flush it really well first with distilled water, then put 1/2 the capacity of coolant in.
If you want the same long life antifreeze as Dexcool, but a similar formulation as the green stuff, Prestone's Yellow Extended life coolant is the ticket. This is what I use now.
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Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 9/3/2007 2:35:53 AM
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Taymacjack
Posts: 518
Joined: 7/18/2007
From: Auschwitz, Oregon
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my friend works for GM, and he said the first thing he would do if he bought a gm is flush the system and switch to the green stuff.
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 9/4/2007 3:00:17 AM
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Taymacjack
Posts: 518
Joined: 7/18/2007
From: Auschwitz, Oregon
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with all the fueding over orange vs green antifreeze, ive decided to go old school and switch to gold. forget dexcool, forget ethylene glycol , im going gold.
Methanol.
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 9/4/2007 10:17:02 AM
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vagnozzi
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I'm glad I saw this thread, because I'm having head gaskets and intake manifold gasket done tomorrow. Curious now if I should make the switch or not? I always top off and check my levels and have a stant cap. I'll probably stay with dexcool...anyone wanna convince me otherwise? 
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 9/4/2007 10:23:41 AM
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swartlkk
Posts: 14299
Joined: 5/1/2005
From: Waterloo, NY
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I recommend Prestone's All Makes All Models extended life coolant. Same extended life as Dexcool.
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Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: WHO'S HAD GOOD LUCK WITH DEX-COOL - 9/9/2007 12:49:07 PM
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gio17vani
Posts: 5
Joined: 9/9/2007
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My parents have a 97 s-10 blazer with 110,000 miles and it's had problems stemming mostly from electrical issues since 2000. As far as dexcool goes, my radiator separated and leaked all the coolant out 2 weeks ago where it met with the oil cooler. It was for the most part orange but a little brown in color and there was some sludge in the bottom of it and I switched to the prestone yellow stuff after replacing the radiator and the truck has never run better. Was it the dex-cool maybe or maybe not I'm just a diy'er with a chiltons manual. I have read alot of peoples problems and concerns and I don't feel like replacing any gaskets if I can help it since there is not much room in that s-10 bay with the 4.3 in there and my knuckles always end up bloody.
I am new to this forum and my parents needed my truck for moving some stuff and left the blazer with me to play around with for the next 2 weeks so I'll be lurking and asking some questions till then and hopefully I can get a few things done.
1997 s-10 blazer 4.3L vortech 4x4
-Gas gauge doesn't work... Thinking fuel sending unit.
-Crankshaft pulley? (lower left in bay) that wobbles back and forth.... Possibly the harmonic balancer?
-Serpentine belt cracking and has very slight squeaking... New gatorback belt already purchased just haven't installed.
I realize it's off topic but if anyone has an opinion on any of these plmk in im or email it would be appreciated.
< Message edited by gio17vani -- 9/9/2007 12:54:51 PM >
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