What?s the difference between summer-blend gasoline and winter-blend gasoline? - Ask.cars.comThe winter blended fuel has little to do with it. In most cases at least here in Canada most of our fuel has 10% ethanol year round as an oxygenator. Most places have banned MTBE that was used for years as it as a carcinogen. Ethanol now replaces it year round.
In most cases the fuel system changes the blend to be fairly rich to help warm up the engine quick. This is even true without a car starter. Also using defrost sometimes used the AC to dry out the air for better defogging.
As for your air pressure swap over to Nitrogen and you will not have as much of a problem as it's much more stable in low temps.
WOW! 93,333$ in gas every year! (Unless my math is way off)Rolling resistence is greater in winter also due to wet, snowy, icey roads. The cold, dense air also increases wind resistance costing mileage. Stuff I've learned driving tractor-trailer for 19 years. Imagine paying $4/gallon and getting 6-7 mpg over 140,000 miles a year.