Winter fuel does not produce as much energy as summer blend fuel which is one of the reasons why your mileage is worse in the winter.
"Winter" diesel is just a blend of #1 and #2 diesel, at least where I live. Now you generally find #1 and #2 as choices. Many years ago you just had one diesel pump and they changed the mixture when the weather turned cold. I imagine in the summer it was just #2.
__________________
Ernest Jenkins
2005 Newell Thunder
Shakin the open road!
|