Notices
2017 - 2022 Super Duty The 2017-2022 Ford F250, F350, F450, F550 & F600 Super Duty Pickup and Chassis Cab
Sponsored by:
Sponsored by: CARiD

Couple mpg questions

Thread Tools
 
Search this Thread
 
Old Dec 1, 2022 | 09:15 AM
  #1  
RandyinTN's Avatar
RandyinTN
Thread Starter
|
Fleet Mechanic
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2018
Posts: 1,463
Likes: 537
From: Wasilla, AK
Couple mpg questions

Truck would be a new F450, diesel (not the HO), 4.30's, 4x4.
Unloaded running the interstate 70-75?
Pulling a 15-16K fifth wheeler 65 mph. 2 adults with a couple of hundred pounds of gear in the bed.
Thank you
 
Reply
Old Dec 1, 2022 | 09:37 AM
  #2  
CheeseheadFord's Avatar
CheeseheadFord
Fleet Mechanic
Joined: Jan 2022
Posts: 1,410
Likes: 712
Google is your friend and will get you pretty close to what you're looking for. You're going to have $150K or more invested in truck and 5er is MPG really what you're worried about? Google will give you a ballpark estimate of what you can expect, if its 1-2 MPG difference and that breaks the bank you may want to reconsider your plan.
https://www.google.com/search?q=2022...hrome&ie=UTF-8
 
Reply
Old Dec 1, 2022 | 11:34 AM
  #3  
KCRebel's Avatar
KCRebel
Laughing Gas
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2017
Posts: 802
Likes: 197
From: Tupelo, MS
Originally Posted by RandyinTN
Truck would be a new F450, diesel (not the HO), 4.30's, 4x4.
Unloaded running the interstate 70-75?
Pulling a 15-16K fifth wheeler 65 mph. 2 adults with a couple of hundred pounds of gear in the bed.
Thank you
13-14 unloaded at freeway speeds
I get 10 towing our 18k rig at 65mph max speed

I had a 14k rig that I towed with an 18 250 and got 11mpg towing at 65mph max speed. That truck had the same engine but with 355 gears. I've been pleased with the mpg the 450 gets considering how low geared it is. Towing with it is effortless and fun. It loves to work.

You will get some higher numbers from the lie o meter and those who believe what they see on the dash. My numbers are hand calculated and on this truck it's been very close to what the dash says ironically.

I will say in my 21 45 the gas gauge is dead nuts accurate with no "hidden" reserve. When it says 50 miles to empty the 48 gallon tank will hold 46 gallons. That was an adjustment as every vehicle I have owned since 2005 or so had a considerable reserve that didn't show on the gauge.
 
Reply
Old Dec 1, 2022 | 01:18 PM
  #4  
RandyinTN's Avatar
RandyinTN
Thread Starter
|
Fleet Mechanic
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2018
Posts: 1,463
Likes: 537
From: Wasilla, AK
Originally Posted by KCRebel
13-14 unloaded at freeway speeds
I get 10 towing our 18k rig at 65mph max speed

I had a 14k rig that I towed with an 18 250 and got 11mpg towing at 65mph max speed. That truck had the same engine but with 355 gears. I've been pleased with the mpg the 450 gets considering how low geared it is. Towing with it is effortless and fun. It loves to work.

You will get some higher numbers from the lie o meter and those who believe what they see on the dash. My numbers are hand calculated and on this truck it's been very close to what the dash says ironically.

I will say in my 21 45 the gas gauge is dead nuts accurate with no "hidden" reserve. When it says 50 miles to empty the 48 gallon tank will hold 46 gallons. That was an adjustment as every vehicle I have owned since 2005 or so had a considerable reserve that didn't show on the gauge.
Thanks, not as good as I thought it would get. Been exploring all my options as my next truck will be the last truck I buy. Might have to explore a DW 350 with 3:55’s. Still 12-18 months away from pulling the trigger on the purchase.
Decisions decisions
 
Reply
Old Dec 1, 2022 | 07:18 PM
  #5  
stryder's Avatar
stryder
Fleet Mechanic
25 Year Member
Joined: Jul 2000
Posts: 1,493
Likes: 346
From: SE Iowa
Guess I'm in a decent mood tonight....rarity these days to questions asked almost daily.

This was a 3359 mile round trip. From SE Iowa to Sedona, AZ going thru Colorado and Utah on the way there. Going thru NM, TX, OK, and MO on the way home. Unloaded and averaging 70mph. Trip to Sedona got almost 17.5 before slow short trips brought it down. Hand calculations were within 0.1-0.2 every tank.


 
Reply
Old Dec 1, 2022 | 07:45 PM
  #6  
Maxium4x4's Avatar
Maxium4x4
Super Moderator
20 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2004
Posts: 21,113
Likes: 3,939
From: Ohio
Club FTE Gold Member
Gentlemen, how is everyone?
 
Reply
Old Dec 1, 2022 | 07:56 PM
  #7  
Tom's Avatar
Tom
Super Moderator
20 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Club FTE Gold Member
Thread cleaned and reopened.

Come on, guys. Everyone here has been on FTE long enough to know that personal attacks aren’t allowed. If you can’t be better than that, I recommend Twitter, Facebook, Reddit, or just about anywhere else.
 
Reply
Old Dec 2, 2022 | 05:08 AM
  #8  
B-ManFX4's Avatar
B-ManFX4
Fleet Mechanic
Shutterbug
Liked
Loved
Community Favorite
Joined: Feb 2021
Posts: 1,407
Likes: 1,172
From: East TN
Unloaded mine hovers at an honest 17 MPG IF I use the cruise control and set it at 70 MPH. It drops rapidly as I exceed 70 MPH and increases slightly at 65 MPH.

I don't have a 5ver, I have a ~10,000 lb. TT. I usually tow at 65 MPH or so and when I do, with the truck loaded with gear too, it sits pretty consistently at 11 MPG. I'm guessing yours will be slightly lower given the weight and wind catching area.

I can't imagine the torque with 4.30 gears. Mine moves my TT so easily I am genuinely shocked sometimes. Merging onto the Interstate is definitely not an issue - truly amazing power - and I have a 2019 which is weaker than the later versions of the 6.7.

Big party this morning - I got diesel for $4.09 / gallon !!
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-1

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-2

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-3

Every 2026 Ford Engine Explained

 Brett Foote
story-4

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-5

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-6

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-7

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-8

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-9

Top 10 Ford Truck Tragedies

 Joe Kucinski
Old Dec 2, 2022 | 05:35 AM
  #9  
Joe T's Avatar
Joe T
Hotshot
5 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2017
Posts: 10,170
Likes: 1,375
From: Chaz
If you are running empty a lot the 3.55 f350 drw has pretty impressive mpg.
 
Reply
Old Dec 2, 2022 | 08:38 AM
  #10  
RandyinTN's Avatar
RandyinTN
Thread Starter
|
Fleet Mechanic
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2018
Posts: 1,463
Likes: 537
From: Wasilla, AK
Originally Posted by Joe T
If you are running empty a lot the 3.55 f350 drw has pretty impressive mpg.
Thank you. What do you think the diesel DRW F350 4x4 with 3:55's would get at 70 mph running empty?

 
Reply
Old Dec 2, 2022 | 10:08 AM
  #11  
CheeseheadFord's Avatar
CheeseheadFord
Fleet Mechanic
Joined: Jan 2022
Posts: 1,410
Likes: 712
delete------
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
thelonius
2017 - 2022 Super Duty
18
Aug 13, 2017 11:08 AM
arlan in arizona
1999 - 2016 Super Duty
8
May 5, 2013 12:05 PM
Biggziff
6.7L Power Stroke Diesel
19
Aug 21, 2011 09:07 PM
firegabe
1999 - 2016 Super Duty
6
Jun 21, 2011 01:14 PM
keeper1200
1999 - 2016 Super Duty
9
Jan 2, 2009 07:30 PM




All times are GMT -5. The time now is 04:47 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE