Les: This should look familiar to you:
It's good to see data that's reproducible right? Now if we could only understand why that behavior occurs...
And with today's data superimposed on the same old C/W vs coolant temp graph:
I think this picture would be a good bit different with a clearer estimate of true W. I am also starting to wonder if maybe noninsulated wb and imperfectly insulated res and hose become a factor at low coolant temps and cause higher apparent C/W.
Almost forgot; numbers for Les here:
http://phaestus.procooling.com/mcwchill/temps3.jpg