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Old 11-04-2009, 08:20 AM   #3 (permalink)
bismic
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Join Date: Sep 2005
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It took me 5 distilled water fills to flush everything out.

As SeaTowJoe said - you filled it to about a 30% concentration.

I would recommend draining again, adding Distilled water and the VC-9 and circulate by driving and getting the engine hot. Ford insists this is very good for the system (and I assume it is safe since I have not read anywhere that people are suspecting that it caused problems). They say it can get rust and precipitated deposits out of the oil cooler - but it will never resurrect a plugged oil cooler.

Edit - it is VERY important to your truck to have AT LEAST a 40% concentration - even better to be at 50%.
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Last edited by bismic; 11-04-2009 at 08:24 AM.
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