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Dex Cool? yes or no?

 
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QuickNick
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PostPosted: Tue Jan 27, 2015 6:58 pm    Post subject:  Dex Cool? yes or no? Reply with quote

I need a water pump, so I have the perfect reason to flush out the Dex Cool & go green Laughing Maintenance & upkeep aren't a problem, but I do prefer the regular coolant.

What are your opinions on converting?

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PushrodPower
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PostPosted: Tue Jan 27, 2015 7:10 pm    Post subject:   Reply with quote

Personally, I just use whatever green 50/50 coolant is the cheapest at the parts store. Just don't put any of that stop leak crap in your radiator. That stuff just makes a nice oatmeal sludge.

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QuickNick
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PostPosted: Tue Jan 27, 2015 7:21 pm    Post subject:   Reply with quote

And stay away from using eggs as stop-leak Wink

I'm still running Dex Cool right now. I did a "coolant change" - not really a flush just a drain & refill, last year. The old Dex Cool didnt look so good. Even now its not the same shade as the new Dex Cool I have left over from the change & the car just doesnt get driven much so its not past its life span.

I guess it just doesnt matter, as long as I get all the Dex Cool out before swapping to "normal" coolant??

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PostPosted: Wed Jan 28, 2015 11:07 am    Post subject:   Reply with quote

In my 05, I used real GM non Dexcool coolant. Some say the problem was due to older intake gaskets which on my car were replaced with the newer style [genuine GM], & others say it's due to air in the system. Why take a chance? I can say when I was the parts guy at a Chevy dealer, the heavy line mechanic [did engine swaps, & major engine work] drained out the Dexcool of a brand new Chevy Extreme, & replaced it with the non Dexcool coolant. When I asked him why he'd do that on a vehicle with 10 miles, he replied "if you've seen what I've seen, you'd do the same". However, I'm sure there are folks here who use Dexcool w/o any problems. When I drained the Dexcool from my gf's 06 Monte Carlo, it looked fine, but I still flushed it, & replaced it with non Dexcool. GARY

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Grape
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PostPosted: Wed Jan 28, 2015 2:43 pm    Post subject:   Reply with quote

From my experience, DexCool only creates a problem when you switch back and forth between DexCool and another brand...

If you just stick to one brand, no matter the brand, it should not be a problem..

just my 2 Cents from the 2 Imps and 2 Trailblazers

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QuickNick
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PostPosted: Wed Jan 28, 2015 5:13 pm    Post subject:   Reply with quote

Thanks for the replies!

I think I'm going to get rid of the Dex Cool & go with good "green stuff." Mainly because of how it looks now after only a short time in there, add to that the price & the Imp is the only car in the garage that takes it-no brainer. Been kicking it around all day & it seems to makes the best sense.

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PostPosted: Sat Jan 31, 2015 3:08 am    Post subject:   Reply with quote

PushrodPower wrote:
Personally, I just use whatever green 50/50 coolant is the cheapest at the parts store. Just don't put any of that stop leak crap in your radiator. That stuff just makes a nice oatmeal sludge.



mmm.... oatmeal sludge
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PushrodPower
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PostPosted: Sat Jan 31, 2015 10:54 am    Post subject:   Reply with quote

Impala_03 wrote:
PushrodPower wrote:
Personally, I just use whatever green 50/50 coolant is the cheapest at the parts store. Just don't put any of that stop leak crap in your radiator. That stuff just makes a nice oatmeal sludge.



mmm.... oatmeal sludge


I wish my camera was working right and could get a picture of it. I had my coolant flushed by a shop a little over four years ago and they put that stuff in it. It doesn't seem too work well considering I'm leaking coolant at the thermostat housing.

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04ImpalaSS wrote:
How much miles are on those seats? How much pounds of ass were applied to the seat during every trip? Lol

wedebrook wrote:
This thread is about *this* far from being about me, all oiled up, eating chili mac in a walmart bathroom.

nightryder wrote:
My c**k broke.
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PostPosted: Sat Jan 31, 2015 1:15 pm    Post subject:   Reply with quote

I'm dreading the day I decide to flush my cooling system. I just know there is going to be some nastiness coming out of there Shocked Laughing

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PostPosted: Sat Jan 31, 2015 4:01 pm    Post subject:   Reply with quote

Done!
It went well, the only bad part was being outside in 25* weather, snowing, with the hose flushing everything in sight..got a little cold! Probably should have done pics just in case anyone is interested but..

What I did was open the radiator drain & let it go into a drain pan. After everything was out, I fired up the (dead cold) engine for a few minutes, then repeat the drain. I had the scanner on it & made sure the temp never rose above 100*. Then I refilled the rad with straight cold tap water, ran it till it warmed up to 195ish (thermostat range) & drained the rad again. What I was trying to do was catch as much coolant without letting it go all over the ground & be a environmental disaster Crying or Very sad

Next I unhooked both hoses going to the heater core & the lower rad hose (also the overflow hose going to the overflow bottle). Rolled out into the driveway & started flushing with the hose. I ran water both ways thru the heater core & the connecting hoses/tubes. Did this for about 4 minutes each way until it was fresh water running out. With the lower rad hose unhooked water will run back out of the engine when you reverse flush thru the heater core tubes (engine side). Coolant bottle is hard to remove because of the STB, so I put the hose in there & let it run. I ran the car for ~1 minute before driving it back into the garage (to flush the remaining water out).

Nothing scary came out, my "pre flushing" caught most of the dex cool in the drain pan vs letiing it go into the ground. The heater core had the most "junk" left in it. I slapped on a new water pump, thermostat & rad cap, filled & bled the system & its perfect now. Temp stays near 180* (22* outside) & right at the 195* in stop & go traffic. Highest temp I saw was a 203* & it dropped fast. After the test drive I checked it with a generic coolant tester (Prestone) & its perfect. I have GREAT heat now & can use the normal green coolant.

Only problem is that my driveway is the best ice skating rink in the city Laughing

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PostPosted: Tue Feb 03, 2015 11:50 am    Post subject:   Reply with quote

Glad to hear everything went well. Bummer that it was so cold when you worked on it
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