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post #1 of 6 (permalink) Old 08-28-2012, 08:46 AM Thread Starter
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Dexcool Mixed with Green!!

So about a week or so ago i changed out my intercooler pump on my ss.
The fluid didnt quite look so orange to me. So i added more dexcool after to fill it back up. But it looks like someone put green and dexcool in the intercooler system, kinda murkey slight dark.

This is a separate system from the engine coolant right? Because the overflow is nice and orange, looks like pure dexcool.

Should i flush the intercooler system? is there a plug on the bottom of the intercooler?

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post #2 of 6 (permalink) Old 08-28-2012, 04:10 PM
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I have heard that dexcool mixed with regular antifreeze is a very bad thing, the chemicals don't get along and will eat the gaskets

It may be a myth, but I have seen 2 gm cars that had the coolant mixed, and both had bad gasket erosion, but it's a chicken or egg thing, as they had coolant loss before the coolants were mixed

I would flush it just to be safe though


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post #3 of 6 (permalink) Old 08-28-2012, 05:19 PM
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Even if you mix the green stuff with Dex-Cool it should not become milky or cloudy. Cloudy usually means oil. So if you installed a new circulating pump I would flush the old and in with the new properly mixed Dex-Cool as per direction on container.

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post #4 of 6 (permalink) Old 08-28-2012, 07:16 PM Thread Starter
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ok thanks guys.
Well it just looks like green and orange mixed.
I just dont want the new intercooler pump getting wrecked because of sludge.

I also plan to flush the intercooler system with distilled water and refill with dex-cool 30% water 70%

I read that this mixture is good to about 0 degrees F. Doesnt get colder than that here in the winter. This mixture should also help keep my IATs down because of my new supercharger pulley

07 LSJ turbo swap
-to4e 50 trim .63 a/r @ 19psi
-2.5" intercooler system with zzp bov
-2.5" exhaust
-turbonetics deltagate II w/voodoo boost controller
-3" intake
-siemens #60s
-aem uego wideband afr
-HP custom tune


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post #5 of 6 (permalink) Old 08-28-2012, 08:06 PM
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Read the label . I think it transfers more heat at 50/50.

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post #6 of 6 (permalink) Old 08-29-2012, 05:42 AM
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Some of that universal antifreeze you see that is supposed to mix with any color antifreeze is green in the bottle. I have never used it in a dex-cool system but I guess it is probably ok. I am old school and would just rather use what it is supposed to have even if it costs an extra couple of bucks to get orange over universial.
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