I performed one final test of powdered Tide Professional, this time in cool (75-80 degrees F) water. Follow the link to see the towels in Jetcone’s “Cold water washing has arrived” thread. Interestingly, the results using cool water were slightly worse than when using warm water.
https://www.automaticwasher.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?95725_99~1#bott
https://www.automaticwasher.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?95725_99~1#bott