This is a discussion on antifreeeze within the General Help forums, part of the LSx Technical Help Section category; i was told when it came time to flush my cooling system that i should re fill it with the ...
11-03-2009, 11:39 PM #1
i was told when it came time to flush my cooling system that i should re fill it with the green antifreeze and not the dexcool because over time the dexcook corodes stuff. has any one ever heard of this? and in all honesty wich one would you guys go with? or does it even matter?
11-04-2009, 03:06 AM #2
This has been covered many times here. In reality, it doesnt matter. Some of us have gone to the green stuff, some havent. Dexcool is fine coolant as long as it stays away from non ELC coolant. If you do switch, flush the system many times. You dont want any Dexcool left in the system.
11-04-2009, 03:10 AM #3
11-04-2009, 04:14 AM #4
I have run Dexcool in both my 01 Z28 (Sara), and my 04 Tahoe, and have not experienced any problems whatsoever. I change the coolant every 50K using distilled water, and Royal Purple "Purple Ice".
11-04-2009, 04:22 AM #5
- Join Date
- Feb 2009
- Mansfield, PA
Black & Blue
- '02 WS.6 / '07 Suburban
As stated by Hi-Po -- we have covered this quite a few times and you can search the site for more information. My personal experience was that the DexCool in our car did a great job of protecting the engine and radiator from corrosion. We purchased our car with 71,000 on it last year and I flushed the system in the spring. The block passages and radiator looked like new.
When you flush the system, be sure to drop the block drains as there remains quite a bit of coolant in the engine even after removing the thermostat housing. There is a 17mm allen bolt above and behind the alternator and a 5/16" (probably metric, but this had the tightest fit) allen bolt directly above the starter.
Whatever you decide to go with, just do not mix DexCool with any of the green stuff. Also, be wary of airlock on initial startup which causes the thermostat to stay closed. Slowly refill the cooling system and rock/bounce the car on it suspension as you do to help work out any air pockets.
11-04-2009, 11:44 AM #6
thanks for the tips bros.
11-04-2009, 02:12 PM #7
just run global or stick with dexcool. I have a feeling 99% of the stuff out there about dexcool is from old motorheads that by nature shun anything new. I've owned 4 vehicles that ran dexcool and never had any coolant issues with them related to dexcool. I run global in my f-body but ran dexcool for the first 90k miles.
11-05-2009, 09:54 AM #8
The main reason why cooling systems corrode over time is by not using distilled water. Tapp water has minerals in it that over time cause electrolysis in the colling system and corrodes away at the aluminum. Its teh suck. But yeah, I just use distilled and water wetter. I'm in Northern Cali, no worries about freezing
11-05-2009, 10:30 AM #9
- Join Date
- Jul 2006
- jacksonville nc
- 1995/2002 camaro z28's
from what ive read it seems like most people who run into problems with dexcool are people who never flush or change there coolant
11-05-2009, 11:14 AM #10
if you flush your coolant once a year you'll have no issues. I haven't had an issue yet and I've had the car for 10 years. I actually run cooler now than I did stock
11-05-2009, 07:23 PM #11
From what I seen and delt withdex cool will mess with the system,IF and only IF you don't change it at the proper intervals. I have seen cars and trucks come in that had the same coolant for 10 years that looked like clay was added and smelled like cow manure. I have seen cars come in that the owners done everything by dealer reccomendations relegiously, their coolant and systems were just as clean as new.
Just use the decool flush the system and replace the hoses every5 years or 100 k and you will be fine.
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