Notices
6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

questions

Thread Tools
 
Search this Thread
 
Old Jan 6, 2008 | 05:14 PM
  #1  
Hank85713's Avatar
Hank85713
Thread Starter
|
Cargo Master
Joined: Feb 2002
Posts: 2,414
Likes: 22
From: Tucson USA
questions

I need to know what I can do to improve milage (just got back fromWF, Tx), got probably 15 mpg on the trip at 80 mph on down. seems to have lost some milage since last summer. tried to get an oil change to synthetic but dealer there didn't have full synthetic and I didnt have time to wait for him to outsource.

Anyhow I know guys talk about programers and just chips but in reality what can be expected? I see the big g advertised (a chip) for $200 or so and a complete set up for around $600. I know many here prefer an sct but what in reality is the way to go. I have a 25ft TT to pull once in a while, use the truck for travel and some light cargo so do not want a hot rod (my BIL has the accelerator and it runs well but his milage also sucks) but from what I have read big HP from programers chips lead to big problems. Just looking to have a nice reliable truck with maybe a little better MPG.

Have only installed a Gibson turbo back exhaust, am thinking of the inlet neck but need to know if I should stay witht the 03-04 or go for the later 05-07. The OEM airfilter even in comparisons does well and one of the mags says not to change unless pushing aftermarket mods, the OEM will remain.

Truck is 04 FX4.

Thanks in advance.

Hank
 
Reply
Old Jan 6, 2008 | 05:28 PM
  #2  
Rob.D's Avatar
Rob.D
Elder User
Joined: Feb 2004
Posts: 754
Likes: 0
From: Cedar Springs,MI
I'd say if you were running 80mph and got 15mpg your doing great! Really most people only get 15 when they run 70-75. Also if you got a winter blend of fuel your mileage will suffer. SCT is the way to go from Spartan. Lot's of post to read regarding the subject and mileage gains. Good luck
 
Reply
Old Jan 6, 2008 | 05:38 PM
  #3  
bigredtruckmi's Avatar
bigredtruckmi
Lead Driver
Veteran: Navy
Joined: Jan 2005
Posts: 7,782
Likes: 221
From: Huntington Indiana
Club FTE Gold Member
Speed makes a LOT of difference in fuel economy. I have found when I go over 70 that my mileage really drops off. Also the area you are from might have just switched over to the ultra low sulfur fuel which does hurt mileage. I noticed better fuel mileage towing this winter when I found some low sulfur fuel on a trip to Florida.
 
Reply
Old Jan 6, 2008 | 05:56 PM
  #4  
rotun's Avatar
rotun
Reads ***** rules!
Joined: Nov 2007
Posts: 1,105
Likes: 3
From: So.Ca./ N.E. UT
Club FTE Silver Member

I was getting 16.5 doing 80-90 on a trip to & from Utah, on the way up (650 miles) my SnugTop was loaded and completely packed with moving boxes, etc.The only thing I did was start using a cetane boost and diesel concentrate from AMSOIL. Your ld should have the Motorcraft cetane boost/ conditioner as well. Before I started using it I was getting about 14 around town, now I'm getting a little better then 15. Try it out for a couple of tanks, each truck will get different results.
 
Reply
Old Jan 6, 2008 | 07:39 PM
  #5  
Hank85713's Avatar
Hank85713
Thread Starter
|
Cargo Master
Joined: Feb 2002
Posts: 2,414
Likes: 22
From: Tucson USA
Rob & Big red, I get about the same at 70 as I do at 80! last summer on a trip to Colorado Springs we were driving 70-75 getting around 16-17, wife said to try 80 as we were driving slow and the milage actually improved. A lot of the recent trip was to North Tx from AZ, my milage did improve from El Paso to Tx from what I got from abiline to Elpaso. Used Flying J only so dont know if they have different fuel. I was battling headwinds from WF to El paso. But like I said I have read many on improvements but dont know if programers are all that much more than the chips they advertise. There is so much hype out there that I just really cant tell. I know that DW or DP did an article where they added a chip only and got an improvement of 1-2 mpg. along with syn oils and lubes. I think they added an intake and a catback too.
 
Reply
Old Jan 7, 2008 | 05:40 PM
  #6  
bigredtruckmi's Avatar
bigredtruckmi
Lead Driver
Veteran: Navy
Joined: Jan 2005
Posts: 7,782
Likes: 221
From: Huntington Indiana
Club FTE Gold Member
Some flying j stations have both fuels. You have to look on the pump to see if it says "safe for 08 engines". If it does then it is the ULSD fuel.
 
Reply




All times are GMT -5. The time now is 10:08 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE