Originally posted by: marvdmartian
Let's not forget the wussies that take time to warm their cars up in the wintertime, then wonder why their mileage takes a 2-3mpg hit.![]()
Originally posted by: thomsbrain
I don't see any logical connection between colder air and lower MPG. Yes, your engine uses "more" gas to compensate for the denser air, but since your gas is likely to be cold, too, it is ALSO denser. Cold gas increases mileage. I'd be surprised if the computer actually calls for more gallons per mile, with all else being equal.
I think what people are noticing has a lot more to do with winter blend fuels with lower-energy-density additives and longer warm-up times. Cold engines KILL mileage.
Originally posted by: LTC8K6
It's a conspiracy by big oil.
Originally posted by: Zenmervolt
Originally posted by: thomsbrain
I don't see any logical connection between colder air and lower MPG. Yes, your engine uses "more" gas to compensate for the denser air, but since your gas is likely to be cold, too, it is ALSO denser. Cold gas increases mileage. I'd be surprised if the computer actually calls for more gallons per mile, with all else being equal.
I think what people are noticing has a lot more to do with winter blend fuels with lower-energy-density additives and longer warm-up times. Cold engines KILL mileage.
Air density changes faster than fuel density.
ZV
Originally posted by: Ronstang
Originally posted by: Zenmervolt
Originally posted by: thomsbrain
I don't see any logical connection between colder air and lower MPG. Yes, your engine uses "more" gas to compensate for the denser air, but since your gas is likely to be cold, too, it is ALSO denser. Cold gas increases mileage. I'd be surprised if the computer actually calls for more gallons per mile, with all else being equal.
I think what people are noticing has a lot more to do with winter blend fuels with lower-energy-density additives and longer warm-up times. Cold engines KILL mileage.
Air density changes faster than fuel density.
ZV
But you need less air to make the same HP to keep the car going and thus less gas too. If your mileage drops in colder temps it is because you are driving more spirited because the car is a little more peppy.
The only reason you see a drop in fuel economy these days during the winter months is because our stupid government thinks it has the knowledge to choose how to blend gasoline.
Originally posted by: MBrown
Why does colder air hurt mgp?
Originally posted by: Elstupido
I have found that winter blend gasoline is for the most part, responsible doe the drop in mileage, not to mention 0 mpg when warming up the engine, which is essential in below 0 degrees f temps.