Anyhoo, re-reading the first post I assumed the poor winter mpg was related to the following.
1, winter fuel that is full of non value added fluids other than gasoline.
2, cold air is more dense and takes more energy to plow through.
3, sleet, snow, slush all take more effort to drive through, makes the vehicle heavier and cause it to drive at a slower than efficient speed.
4, more fuel is needed to maintain operating temp, not to mention achieve it.
5, additional fuel is needed to heat the nut behind the steering wheel.
I was on a long drive once and fooled with the heater. When turning the heater on to blow more heat I could watch my mpg average start to drop, turning it down I saw it come back.
My question was rather using an electric heater vs the water powered one that came with the vehicle would make more economical sense?
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