That was my experience when I had to park outside. This past winter was my first in a heated garage. The truck was 45 degrees in the morning an I only lost about .5 mpg.In the winter the gasoline is blended with more volatiles like benzene and butane to help the vehicle start easier. This winter blend has less BTUs so you use more, combine that with thicker oils in the cold, longer running enriched and increased rolling resistance of the tires it is not uncommon to see a 2 to 4 mpg mileage loss in the winter. I see about a 2.5 mpg hit in the winter.
What, Am I a clown?Retired people are funny.
Did you notice any difference in driving it?Bad start to the weekend. I was clearly not paying attention and accidentally hit the 87 button this morning filling up. Running the 91-93 LMS tune. I put 13.526 gallons in with the remaining 93 I had. Oh well, guess I'll take it easy until I can get some more 93 in it.
In this part of AZ cold is 30 degrees and OMG the world is ending cold is 25 degrees. Overnight lows.In the winter the gasoline is blended with more volatiles like benzene and butane to help the vehicle start easier. This winter blend has less BTUs so you use more, combine that with thicker oils in the cold, longer running enriched and increased rolling resistance of the tires it is not uncommon to see a 2 to 4 mpg mileage loss in the winter. I see about a 2.5 mpg hit in the winter.
FWIW, I get about 22.5 to 23.5 mpg around town in the summer months where it has 93 or 87.
Well it does vary by region so it may not be very "wintery". I remember back in the 70s when they first made the switch to low volatility gasoline and didn't adjust for the winter everyone had to carry a can of ether starting fluid. By the next winter they allowed gas to have the higher volatiles in and that was the beginning of "winter blend".In this part of AZ cold is 30 degrees and OMG the world is ending cold is 25 degrees. Overnight lows.
I wonder how wintery our winter blend is?