Coolant Additive For 7.3 - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 36 (permalink) Old 03-13-2009, 04:34 AM Thread Starter
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Coolant Additive For 7.3

What additives other than the one from Ford works for keeping the injector cups happy when refilling the coolant? Doesn't Napa have one called something like napacool or something like that?

Thanks,
Matt R

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If you have nozzles that were Extrude honed over and over and over again. It will look like a porn stars ass.hole where the pintle is supposed to seal.
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post #2 of 36 (permalink) Old 03-13-2009, 07:37 AM
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Re: Coolant Additive For 7.3

I think your thinking of Nalcool. I dont know if it does the same things as the additive from Ford or if they have two different purposes The Nalcool is a water treatment that prevents cavitation erosion, mineral build-up, etc.

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post #3 of 36 (permalink) Old 03-13-2009, 09:44 AM
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Re: Coolant Additive For 7.3

Yes. Napacool. is what you are looking for. think you need 2 bottles. just read the back of the bottle

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post #4 of 36 (permalink) Old 03-13-2009, 12:17 PM
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Re: Coolant Additive For 7.3

I got mine from International, no clue what they call it.

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post #5 of 36 (permalink) Old 03-13-2009, 12:21 PM
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Re: Coolant Additive For 7.3

I use Napacool seems to be some good stuff we put it in all are equipment also


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post #6 of 36 (permalink) Old 03-13-2009, 12:36 PM
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Re: Coolant Additive For 7.3

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Originally Posted by mattr66 View Post
What additives other than the one from Ford works for keeping the injector cups happy when refilling the coolant? Doesn't Napa have one called something like napacool or something like that?

Thanks,
Matt R
DCA4 is recommended for our cooling systems.
Any good name brand DCA4 is equivalent to or at least a substitute for Ford FW-16, IIRC the new name VC-8.
You need to use Fleet guard 3 way test strips to accurately measure and keep a chemical concentration of 1.5 - 3.0 UPG in the cooling system at all times.

DCA2 is not recommended for our cooling systems and shouldn’t be used..

You could use good quality ELC and do away with the use of DCA4 and the testing.
An organic acid is used in ELC and is not compatible with the conventional SCAs so pick one method or the other and stick to it.
Thorough flushing of the cooling system before changing to an ELC is a must.

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post #7 of 36 (permalink) Old 03-13-2009, 01:23 PM Thread Starter
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Re: Coolant Additive For 7.3

Cool guys... thanks for the info... I'm not flushing the whole system so moving away from the old grean isn't an option for me.

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If you have nozzles that were Extrude honed over and over and over again. It will look like a porn stars ass.hole where the pintle is supposed to seal.
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post #8 of 36 (permalink) Old 03-13-2009, 01:27 PM
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Re: Coolant Additive For 7.3

I dont think you need an additive if you use the original motocraft gold.Please correct me if im wrong,before i mess something up.

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post #9 of 36 (permalink) Old 03-13-2009, 01:56 PM
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Re: Coolant Additive For 7.3

I have been told that Baldwin CS5008 will work in place of the Ford stuff at a fraction of the cost, but I'm just noticing that it says nothing on the bottle about specs.
on edit Baldwin BTA Plus is the DCA4 equivalent.

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post #10 of 36 (permalink) Old 03-13-2009, 02:09 PM
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Re: Coolant Additive For 7.3

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Originally Posted by dixieland-diesels View Post
I dont think you need an additive if you use the original motocraft gold.Please correct me if im wrong,before i mess something up.

The Motorcraft premium gold coolant supposedly does not need additional SCA.
AFAIK the only 7.3 SD’s that came from the factory with this coolant are 02-03.

I personally have little confidence in the gold coolant. I changed my 02-03’s within 50,000 miles to green with the proper concentration of DCA4.
Now as service life dictates they are being changed to a heavy duty ELC.

The gold and the green are not compatible and should not be mixed.

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Last edited by Rustler; 03-13-2009 at 02:12 PM. Reason: cause I fukin wanted to
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