MPG ?
Laughing Gas
Joined: Dec 2021
Posts: 1,098
Likes: 343
From: PG, BC, Canada
With some SnakeOil AKA (EnviroSave metal treatment), a 5 STAR tune, and AmsOil gas treatment to (clean out carbon deposits)... 
Total cost of about $1,200. but now spending about $2,000 a year less for gas with better, noticeably better performance... 
My MPG went from...
13.0 to 15.8 MPG empty winter driving. 21.5% better. EDIT; why didn't it get this with the factory settings...???
8.9 to 11.3 MPG loaded summer driving. 26.9% better. EDIT; Why didn't it get this with the factory settings???
14.5 to 20.1 MPG best summer /empty driving... 38.6% better. EDIT; Why didn't it get this with the factory settings...???
Total cost of about $1,200. but now spending about $2,000 a year less for gas with better, noticeably better performance... My MPG went from...13.0 to 15.8 MPG empty winter driving. 21.5% better. EDIT; why didn't it get this with the factory settings...???
8.9 to 11.3 MPG loaded summer driving. 26.9% better. EDIT; Why didn't it get this with the factory settings???
14.5 to 20.1 MPG best summer /empty driving... 38.6% better. EDIT; Why didn't it get this with the factory settings...???
Laughing Gas
Joined: Dec 2021
Posts: 1,098
Likes: 343
From: PG, BC, Canada
Cargo Master
Joined: Feb 2005
Posts: 2,898
Likes: 185
The 6.7 diesel MIGHT get 15 city and 21 hwy. The 7.3 no way..... If you want fuel economy you bought the wrong engine.
Fleet Mechanic
Joined: Dec 2012
Posts: 1,567
Likes: 539
From: DFW
OP needs a diesel to hit those numbers.
Hotshot
Joined: Jun 2003
Posts: 12,353
Likes: 4,388
From: SW VA
Now, if the OP is just wondering why his truck isn't getting what the salesman said it would...well...welcome to the world of low life lying scumbags....also known as dealership employees.
Thread Starter
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Trailering
Joined: May 2024
Posts: 15
Likes: 0
hmmm, ok thanks for the info. I didn't just take their word about the mpg. I did some research and saw that it was getting closer to 15, not under 10. It is what it is. It's brand new, stock tires, it has the 10 speed tourqshift and 4.30 electronic locking axle and I'm very easy on the gas. I had a 2004 f-350 with over sized tires, a heavy front bumper with a winch, added springs and I was getting 12 mpg. I guess I figured too, 20+ years later it would be a little more fuel efficient.
Lead Driver
Joined: Dec 2020
Posts: 8,640
Likes: 2,435
hmmm, ok thanks for the info. I didn't just take their word about the mpg. I did some research and saw that it was getting closer to 15, not under 10. It is what it is. It's brand new, stock tires, it has the 10 speed tourqshift and 4.30 electronic locking axle and I'm very easy on the gas.
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Brett Foote
Lead Driver
Joined: Nov 2005
Posts: 5,239
Likes: 4,257
From: Kaysville Utah
Your salesman was quoting the mileage for the 6.7L diesel engines.
My 23 6.7L HO F350 Long bed. Gets those number. Pretty consistently 20 mpg empty freeway and 15-16 mpg city, and 11.5 mpg towing my 13,000 lbs horse trailer.
So either he just forgot what engine you were looking at. Assumed all Long beds got the same mileage, Lied or you heard his quote diesel mileage when you were thinking gas mileage.
My 23 6.7L HO F350 Long bed. Gets those number. Pretty consistently 20 mpg empty freeway and 15-16 mpg city, and 11.5 mpg towing my 13,000 lbs horse trailer.
So either he just forgot what engine you were looking at. Assumed all Long beds got the same mileage, Lied or you heard his quote diesel mileage when you were thinking gas mileage.
Cargo Master
Joined: Apr 2021
Posts: 2,588
Likes: 1,669
From: NW Wyoming USA
My 7.3, 4.30, heavy 34.5” M/T tired, 2” air deflector truck gets 12.5-13.5 mpg small town driving (very little time sitting at lights). It gets 16 mpg @ 65 mph, 15 mpg @ 70 mph. Towing a 4k, 10’ tall travel trailer at 70 mph it gets 8.8 mpg. All at 5k-8k feet elevation.
Mountain Pass
Joined: Jan 2024
Posts: 106
Likes: 8
From: Oregon
4.30’s sounds pretty short. You could change the pumpkins to 3.55 or so to reduce RPM’s and probably get better mileage.
Laughing Gas
Joined: Jan 2002
Posts: 759
Likes: 95
My 2022 7.3 Tremor averages around 12.5 mpg city & I do see about 15.5 highway.
The 2002 F250 V10 4:30 AT I had for 9 years got 12 mpg no matter what the conditions were (except towing).
The 2011 F150 3.5 3:73 AT got 17 city, up to 21 highway (if using premium & keeping below 65 mph).
The 2002 F250 V10 4:30 AT I had for 9 years got 12 mpg no matter what the conditions were (except towing).
The 2011 F150 3.5 3:73 AT got 17 city, up to 21 highway (if using premium & keeping below 65 mph).
Lead Driver
Joined: Jan 2002
Posts: 8,677
Likes: 4,782
From: Itinerant
Cargo Master
Joined: Apr 2021
Posts: 2,588
Likes: 1,669
From: NW Wyoming USA
You forgot the Birkenstocks and rainbow colored tie-dye tank top.
