Re: Vinegar
Here's what I have used on many cooling systems that is not acid and is specifically made for cleaning cooling systems:
Read more about it here: http://www.prestone.com/products/print/379?popup=1
Just did mine before my recent Rocky Mountain High Road trip ( https://www.fordbarn.com/forum/showthread.php?t=83966) followed by back flushing as demonstrated here: https://www.fordbarn.com/forum/showthread.php?t=83557. Cleaned it up good.
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Prof. Henry (The Roaming Gnome) 
"It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness
Last edited by Old Henry; 10-03-2012 at 12:10 AM.
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