I've been playing with this more. I've been able to go down to 17F or so and have autostop come on using this technique. I found if I have my temperture set too high it will blead too much heat from the engine. I have my knob set to about 70 right now. I'll probably increase it notch by notch to find out the optimal setting.

I've been doing great mileage wise since I started using this. Near 45 or so mpg (down about 5mpg from 70F which is quite liveable for the winter).

My hydroponics experiment

You ever notice how hard it is to lip read cartoon characters?
"Crazy is what the sane call Delta Flyer"