I think Orman meant for Gary to leave the diesel side on only during any significant cold snap. I would imagine such an occurence over the next couple of weeks at Nashville to be brief if at all.
My internet moniker elsewhere is "hafcanadian". My cousins in Calgary regularly keep me apprised of the temps there, and as you might imagine it freezes early, late, and long. Cousin Doris often pines for her old home ground near Victoria.
There are times I envy Harvey's routine; his experience several times a year would probably expedite my relatively rare winterizing endeavors. I probably fret too much over the icemaker solenoid; it takes more effort to deal with that little thing, what with manually cycling it and dealing gingerly with the hard-to-get-a-wrench-on and easily stripped tube nuts or pumping through pink stuff. The heat tape is probably adequate protection... but if the batteries/charger go down ...
I've never worried about the icemaker filter much, since I can see through the clear lines attached to it when water has drained back. I've never actually pumped antifreeze through it to the icemaker system as I think it might retain some after dewinterizing, and infuse subsequent ice with unwanted flavor.
Harvey, what do you mean by "cheater cord"? A way to activate the solenoid by applying 12 volts directly to it? That would save the hassle cycling the timer. Just removing the tubes will drain them, but not necessarily the valve if it isn't opened.
Joel