Still a little confused...if I want to increase the "boiling point" capacity, will I best achieve with 60/40, coolant/water ratio or vice versa? Not too concerned about freezing temps here in Memphis. Thanks.

If you want to increase the boiling point then have more antifreeze in there. But, think about why would you want to increase the boiling point. If that was your only goal you could put just sand in the radiator.

The key is heat transfer - out of the engine and out of the radiator. Pure water is pretty much THE best heat transfer fluid. Thus, in theory you should run pure water. In the real world you have to worry about corrosion, water pump seals, and freezing. Thus, the development of antifreeze with corrosion resistance and water pump lube chemicals.

Bottom line - antifreeze is good for some things. But too much is not your friend when it comes to keeping the vehicle cooled.

How does your coffee taste now?

Thanks for your opinion. I was simply looking for some insight on mix ratios and seeking further clarification. I'm glad to know that sand and pure water also fall under the category of optimal mix. Coffee is quite strong I'd say.