I just wanted to share some links which I thought provided very useful information regarding antifreeze / coolant. In particular the caveats regarding use of Dex Cool, Organic Acid Technology, OAT, 2-ethylhexanoic acid, 2-EHA or other similar products.
I'm not mechanically inclined so forgive my rudimentary understanding of this topic. After reading these articles I have a small understanding of why this is such a confusing issue.

Basic Coolant Composition and Function
http://www.babcox.com/editorial/tr/tr110046.htm

Dex Cool Issues
http://www.imcool.com/articles/antifreeze-coolant/dexcool-macs2001.htm

Today's Coolant Issues
http://www.macsw.org/pdf/200410MS.pdf

That last link is very informative, sort of an eye opener.

That last link is very informative, sort of an eye opener.

Ditto.