Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

One more time - Diesel Fuel Differences by State or Supplier?

Thread Tools
 
Search this Thread
 
Old Mar 5, 2009 | 01:56 PM
  #1  
TucsonTripleB's Avatar
TucsonTripleB
Thread Starter
|
Mountain Pass
Joined: Jan 2007
Posts: 146
Likes: 16
One more time - Diesel Fuel Differences by State or Supplier?

Sorry if this is a repeat folks. I did multiple searches on FTE and Google and surprisingly did not find anything. So here it goes:

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......
 
Reply
Old Mar 5, 2009 | 02:18 PM
  #2  
Adam0331's Avatar
Adam0331
Posting Guru
Joined: Jul 2008
Posts: 1,285
Likes: 0
From: Jonestown, PA
I know it is better to by from a station that gets a lot of traffic(ie truck stop) than one that doesn't.
 
Reply
Old Mar 5, 2009 | 03:23 PM
  #3  
TucsonTripleB's Avatar
TucsonTripleB
Thread Starter
|
Mountain Pass
Joined: Jan 2007
Posts: 146
Likes: 16
Originally Posted by Adam0331
I know it is better to by from a station that gets a lot of traffic(ie truck stop) than one that doesn't.
I have heard that also, but didn't know why. Does Diesel fuel have an accelerated aging curve?

Are there higher performance mixtures (ie. higher octain Gas?) How do you tell?
 
Reply
Old Mar 5, 2009 | 03:39 PM
  #4  
wla6518's Avatar
wla6518
Senior User
Joined: Mar 2006
Posts: 434
Likes: 0
From: San Antonio, Tx.
This is a difficult question to answer as you are trying to hit a moving target.
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...
 
Reply
Old Mar 5, 2009 | 03:43 PM
  #5  
wla6518's Avatar
wla6518
Senior User
Joined: Mar 2006
Posts: 434
Likes: 0
From: San Antonio, Tx.
Sorry, missed the last question.
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.
 
Reply
Old Mar 5, 2009 | 04:10 PM
  #6  
TucsonTripleB's Avatar
TucsonTripleB
Thread Starter
|
Mountain Pass
Joined: Jan 2007
Posts: 146
Likes: 16
Originally Posted by wla6518
This is a difficult question to answer as you are trying to hit a moving target.
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...
Thanks for the excellent explanation. I wish it were more definitive then that though. Oh well. I guess just try to buy from a high volume station and after that it is just a crap-shoot.

REPS SENT! Thanks.
 
Reply




All times are GMT -5. The time now is 10:04 PM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE