Have been experimenting by using this “re-calibration” procedure for the last 2-3 weeks with my 2006 Fusion [3.0L V6 with 55K mi.]. It has been cold around here. Most days the “high” has been in the 20’s, and the overnight lows in the low teen’s. Previously, when the temperature dropped even slightly below freezing, it was difficult to start, with much cranking required (and usually needed 2-3 attempts to finally fire up). Since running this experiment these past 2-3 weeks, it has started “like new” every single morning!!! So, for now, the experiment is a success and I am a “believer”.
Thanks to those who provided opinion/advice in the original post. Thought you might like to know the results of this experiment. Time will tell if the “success” continues, and I would sure like to know more about this “re-calibration” procedure if anyone has tech details. Thanks again!