Very Odd: Intercooler Fluid Question

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Brakelate
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Very Odd: Intercooler Fluid Question

Post by Brakelate »

So, with the new motor, rather than running traditional Anti-Freeze type coolant, I had put a "Water Wetter" type of product in both the Radiator and Intercooler systems. This is more track friendly, as it is not slick and evaporates should you "burp" some out onto the racing surface while open tracking, they claim it runs 15 deg cooler, and most importantly, it looks cool. :lol:

The brand name is Kool-Aide, as it looks pretty much like a florescent Pink, like the punch. I run it in my motorcycles, etc and have had no issues with it at all. Other than the concern that it has no "Anti-Freeze" abilities.

Unrelated, I had a odd puncture my Radiator a year or ago and swapped back to traditional Anti-Freeze at the time of that repair as I was getting out of Open Tracking so heavily, and the thought of an hard freeze doing damage really ate at me should the car be out over night for some strange reason. The Kool-Aide remained in the Intercooler system, as I was lazy and never got around to swapping it out as planned.

Two years and about 43k miles later, all was going well. No fluid loss, no cooling issues, etc. The color remained it's bright Pink as new. So, I went to perform a routine fluid check just the other day, and much to my surprise, the Intercooler fluid had turned Brown. It was not low, appeared to have no contaminants in it, and showed no evidence of being boiled out. Very strange.

Thinking about this, the only way I can see something externally affecting the fluid would be a leak in the system. In that case, it would either leak out on an "external" component and the level would be low, or the complete opposite, should it develop a leak Internally (perhaps inside the upper manifold ?) it would be subjected to even greater stress (low fluid, as it would be sucked out), or it would be pressurized from boost (and thus push fuel and some oil into the system, but that would over pressure the system and cause it to rupture or at least blow off fluid at the reservoir IMHO).

I suppose it simply could have suddenly aged and changed color. The Intercooler system as a whole seems otherwise healthy, and the engine is running perfectly with no traces of contamination in the motor oil or evidenced in exhaust blowby in either liquid or colored vapor form.

As I mentioned, I use the same stuff in my DRZ and had used it in the KTM. They are of the same batch, and show no changes in color, despite what I assume has been more radical exposure in terms of temp and heat cycles.

I guess it is time to swap it out for cold winter weather survival once and for all as temps are just starting to dip into the low 30s over night, but simply swapping new Anti Freeze into a compromised system does little for my peace of mind.

Any thoughts?

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Tetge
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Re: Very Odd: Intercooler Fluid Question

Post by Tetge »

I seem to remember the anti freeze in my Cobra turning brown and having lumps in it. But, I ran it forever, so, perhaps it does change color as it gets older?

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Brakelate
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Re: Very Odd: Intercooler Fluid Question

Post by Brakelate »

Hmmmm. I even took off the cap and let it run, watching it circulate, looking for any odd material or even a oil slick in the fluid, but nothing.

It's just odd that it would spoil like fruit over night. I swear I just looked at it a week or two ago and it was fine. :think:

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Tetge
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Re: Very Odd: Intercooler Fluid Question

Post by Tetge »

Brakelate wrote:Hmmmm. I even took off the cap and let it run, watching it circulate, looking for any odd material or even a oil slick in the fluid, but nothing.

It's just odd that it would spoil like fruit over night. I swear I just looked at it a week or two ago and it was fine. :think:
Maybe cold temps cause it to change color? Did you try to research on the web? It seems to me that all types of anti-freeze has long intervals between recommended changes these days, so, it shouldn't have lost its effectiveness.

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xjrguy
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Re: Very Odd: Intercooler Fluid Question

Post by xjrguy »

Tetge wrote:I seem to remember the anti freeze in my Cobra turning brown and having lumps in it. But, I ran it forever, so, perhaps it does change color as it gets older?

Sounds like DexCool.
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Brakelate
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Re: Very Odd: Intercooler Fluid Question

Post by Brakelate »

In what context? Does it change color at some point?

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Re: Very Odd: Intercooler Fluid Question

Post by xjrguy »

Brakelate wrote:In what context? Does it change color at some point?
http://www.sancarlosradiator.com/dex-cool.htm

https://www.google.com/#q=dexcool+turned+brown
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Brakelate
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Re: Very Odd: Intercooler Fluid Question

Post by Brakelate »

Interesting. I will swap it out ASAP and hope no damage has been done.

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Tetge
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Re: Very Odd: Intercooler Fluid Question

Post by Tetge »

My anti freeze got darker but it was the correct OEM Motorcraft from the Ford dealer (it was not cheap). So, why would any Cobra have Chevy crap anti-freeze in it?

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Re: Very Odd: Intercooler Fluid Question

Post by Brakelate »

It did not. I could not have been any more specific about what was in it, and why.

By some long shot, apparently, Kool Aide has similar issues. Though it merely changed color rapidly, rather than turning to mud. Thank goodness. But, the same stuff in the bike is fine. :think:

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