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 GM Dexcool Coolant / Antifreeze

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Fri Jul 31, 2009 7:27 pm

I think Autozone reclaims both coolant and oil, but not mixed together.

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Fri Jul 31, 2009 9:07 pm

Jack the R wrote:
What do you guys do with your old fluid?


I have a 55 gallon drum I pour it into. When it gets full I call a recycler to come take it. Last time it cost $60 to have it emptied. I fill it every 5 years or so...

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Fri Jul 31, 2009 10:28 pm

Wish I had an autozone closer . . . May give them a try anyway. Got too much of this stuff sitting around in old buckets.
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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Fri Jul 31, 2009 10:33 pm

I give my used oil to a friend who runs a car repair shop, when I do my own oil changes. He heats his shop with used oil. I put it into detergent bottles, which I find will cap tight enough so they don't leak on the way to his shop, unlike other bottles I have tried.

I don't have any used antifreeze around ATM.

Albertj

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Mon Aug 03, 2009 4:31 pm

I pour mine in little saucers and feed the neighborhood cats....

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Mon Aug 03, 2009 7:58 pm

laughat laughat laughat laughat laughat Mark, you should have your own show.

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Tue Aug 04, 2009 4:50 am

Rickw wrote:
I do the politically incorrect thing to do. I live in a heavily wooded area and have my own little spot for coolant.
Hell, It wasn't THAT long ago that is was considered OK to let it go down the drain in the street.


Dumping in the ground is going to keep it concentrated, and possibly contaminate ground water. I think I'd rather pour it down the regular drain and let it go thru the sewer treatement plant and get nice & diluted... Besides, how can you 'contaminate' sewage? drunk


Or, go with the other Mark's idea and feed the kitties...
.

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Tue Aug 04, 2009 5:25 am

I've been waiting for someone to call me out on this.
I actually have a shop available to me at the end of my road. They let me either bring my fluids to them and dump there, or i can change oil or coolant right there and be done with it.
Nice having an old neighborhood shop in a rural area right down the street, it's a place where farmers and gearheads alike can go to get work done or schedule a little lift time now and then.
BTW, how have you been Eldo, haven't heard from you in a while. Hope everything is OK.

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Tue Aug 04, 2009 12:18 pm

Things are OK, but you're right - I did drop off the planet for a while. I've had a bunch of work, appointments and preparations to get out of the way to get ready for rotator cuff surgery. Now that I've dropped back from Dilaudid to Percocet, I'm starting to catch up on all the backed up email and other Web stuff.
Thanks for asking, Rick.

PS - And once upon a time, when leaving our log cabin at Tahoe in the winter, we had to pour anti-freeze in the toilet bowls... which got flushed each time we went back up. alien
.

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Mon Aug 17, 2009 10:05 pm

Rickw wrote:
I do the politically incorrect thing to do. I live in a heavily wooded area and have my own little spot for coolant.
Hell, It wasn't THAT long ago that is was considered OK to let it go down the drain in the street.


Please don't take this personally...

Ethylene glycol is toxic to aquatic and land based life forms, and it does not take much. Admittedly, it will eventually break down into water and carbon dioxide.

However, used antifreeze contains more than just ethylene glycol and water. It can become contaminated with metals, oils and fuel in its use - these add to the toxicity and increase the environmental harm.

That said, odds are that if the antifreeze dumped into the woods does not hit the groundwater, it breaks down and becomes relatively harmless except for the additives and contaminants. However if it does hit the groundwater, one gallon of it will toxify (make unsafe to drink) up to 10,000 gallons of water.

To the best of my knowledge, there are no federal requirements for managing/disposing of used antifreeze, although most states regulate it. Which is no surprise because (a) it has the potential to be a hazardous waste due to its potentially high pH or its potential to have a high lead content (b) companies selling equipment or services for recycling it have taken the time to 'educate' state legislatures about it. Companies get around a buck a gallon to dispose of antifreeze. Get it? Point is that apparently in and of itself the antifreeze is not the regulated waste, rather it is the used antifreeze's content of copper, lead and such accumulated from engine cooling system wear and fuel or oil accumulated from combustion leaks that makes it hazardous.

I do not know whether antifreeze inhibits the biological activity of septic systems, and I am not interested in running a personal experiment to find out... but I hope my comment was informative and leads us all to make appropriate decisions about our used antifreeze.

Albertj

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Mon Aug 17, 2009 11:15 pm

Al, I think he admitted that he really was having it handled properly when he said "I actually have a shop available to me at the end of my road. They let me either bring my fluids to them and dump there, or i can change oil or coolant right there and be done with it..."

Except for getting rid of those damn cats...

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Sun Nov 01, 2009 9:53 pm

I've read through this thread but still have a few questions:

I thought Dexcool was pink and regular antifreeze green, someone may have topped my system off and mixed the two because it's brown now and I have to do something before winter. I'm going to flush and re-fill with Regular (green) antifreeze since it's something I prefer to do every couple years and the only good thing I've heard about the dexcool is that it does'nt kill the neighborhood cats. Will I have to change my hoses too? What problems might I encounter by switching from pink to green.
I'm thinking GM pushes the pink because they probably go through hundreds of thousands of gallons a year and care more about their EPA status than they do the consumer...could be wrong.
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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Sun Nov 01, 2009 10:30 pm

You just need to flush it out good, try using some Prestone cooling system flush or any other brand.
Point is flush it until only clear water comes out, remove the overflow tank from the fender well and give that a good cleaning as well. It is only held on by a few screws.
Check the underside of your radiator cap too, if it is brown buy a new one. Pull the thermostat and run the car with the flushing solution without the thermostat in the engine for a while, until it gets warm - it won't get up to normal temps but that's OK.
Drain all the water and flushing solution out, put in a new thermostat and seal, run it with straight garden hose water for a while and drain that out then add 50/50 of green anti-freeze (use distilled water to mix your anti-freeze) check all your hoses for dry rot externally. No need to replace hoses just because they had Dex-Cool in them. Install new cap, let it run until warm and bleed all air out of the system using the bleed valve in the thermostat housing, if you can get the front of the car up an incline or on ramps it makes it easier to bleed. Otherwise do the best you can on flat ground and re-bleed in a day or two to make sure there is no air left in the system.
You will have the cleanest cooling system in the neighborhood, but you need to after someone has mixed green and orange to make pink / brown. You'll be glad you did it the correct way when your done.
I do this same procedure to my car every 2 years because I'm anal, but i think it's worth it. If your hoses are original consider replacing them also for preventive measure. There is no reason why you should be stuck on the side of the road due to a blown radiator or heater hose.
Good Luck

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Last edited by Rickw on Sun Nov 01, 2009 10:39 pm; edited 1 time in total
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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Sun Nov 01, 2009 10:38 pm

Eldo wrote:
Al, I think he admitted that he really was having it handled properly when he said "I actually have a shop available to me at the end of my road. They let me either bring my fluids to them and dump there, or i can change oil or coolant right there and be done with it..."

Except for getting rid of those damn cats...


I agre - also will reiterate that under many conditions (including dumping on soil) the stuff breaks down pretty harmlessly anyway, except for if there are contaminants in it.

Albertj

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PostSubject: Re: GM Dexcool Coolant / Antifreeze   Mon Nov 02, 2009 6:23 am

BKRIV wrote:
I've read through this thread but still have a few questions:

I thought Dexcool was pink and regular antifreeze green, someone may have topped my system off and mixed the two because it's brown now and I have to do something before winter. I'm going to flush and re-fill with Regular (green) antifreeze since it's something I prefer to do every couple years and the only good thing I've heard about the dexcool is that it does'nt kill the neighborhood cats. Will I have to change my hoses too? What problems might I encounter by switching from pink to green.
I'm thinking GM pushes the pink because they probably go through hundreds of thousands of gallons a year and care more about their EPA status than they do the consumer...could be wrong.


I have seen brown (muddy-ish) coolant because nobody ever changed it. It might just need to be flushed. You should not need to replace any parts (unless they are worn and cracked hoses etc). It's about the age when the heater hoses and OEM rad hoses will start to let go, so it wouldn't hurt to do hoses at the same time.

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