One more time - Diesel Fuel Differences by State or Supplier?
It seems I consistantly get better gas mileage, smoother running, and better SOTP performance with diesel I buy in New Mexico, compared to diesel I buy in Arizona. I have also seemed to notice differences in brands/locations here in AZ. So, I was wondering.....
Are there differences between brands of Diesel? Which is best?
Are there differences between States with Diesel? (like in AZ we oxygenate our gas during winter to help with pollution, but we get less MPG during that time as well)
Is it better to buy from a truck stop -vs- gas station -vs- conveniance store?
Looking forward to the wisdom of the all knowing FTE Gods......
Are there higher performance mixtures (ie. higher octain Gas?) How do you tell?
Generally you can expect a region to get a large portion of their supply from the same fuel rack or racks. However, on any given day it may be cheaper for stations to ship in fuel from further away depending on transportation costs vs. production costs.
Given your location, I would guess that the fuel you buy in New Mexico comes from Texas or Colorado, where as the fuel you purchase in Arizona may come from the West Coast (again depending on transportation costs).
On top of all of that refineries are constantly changing their crude slates due to availability and economics. Every time they change the crude they put in the fuels they produce change as well. Thus changing the Cetane (Octane for Diesel), Sulfur, Viscosity etc.
I would guess that the fuel you are purchasing that gives you better mileage / power comes from a refinery that runs sweet crudes and has a narrower slate of crudes to choose from, thus giving more consistant results.
I hope this helps some...
As I understand it the reason you want to fill at a busy station is to avoid getting poor quality fuel.
If the in ground tanks sit too long, the diesel can grow algae, the water will settle out and older tanks will corode, leavine lots of fun stuff to clog a filter.
Generally you can expect a region to get a large portion of their supply from the same fuel rack or racks. However, on any given day it may be cheaper for stations to ship in fuel from further away depending on transportation costs vs. production costs.
Given your location, I would guess that the fuel you buy in New Mexico comes from Texas or Colorado, where as the fuel you purchase in Arizona may come from the West Coast (again depending on transportation costs).
On top of all of that refineries are constantly changing their crude slates due to availability and economics. Every time they change the crude they put in the fuels they produce change as well. Thus changing the Cetane (Octane for Diesel), Sulfur, Viscosity etc.
I would guess that the fuel you are purchasing that gives you better mileage / power comes from a refinery that runs sweet crudes and has a narrower slate of crudes to choose from, thus giving more consistant results.
I hope this helps some...
REPS SENT! Thanks.


