How to get better gas mileage from the 7.3?

Mountainman3

Tremor Fan
Joined
Jun 11, 2020
Messages
37
Points
18
Location
NC
Current Ride
2016 F-150
Other than an occasional K&N filter change I’ve always left my trucks stock. I’ve also only had F150’s.
Any ideas on how to improve gas mileage on the 7.3? I know it’s a super duty and you don’t buy them for the gas efficiency. I’m just looking for a few suggestions that may allow me to squeeze out a couple more MPG’s (other than driving in ECO below 65mph!)
 

JC_Tremor

Toasty
Joined
May 30, 2020
Messages
555
Points
63
Location
Tejas
Miltary
USN
Current Ride
Focus ST
Other than an occasional K&N filter change I’ve always left my trucks stock. I’ve also only had F150’s.
Any ideas on how to improve gas mileage on the 7.3? I know it’s a super duty and you don’t buy them for the gas efficiency. I’m just looking for a few suggestions that may allow me to squeeze out a couple more MPG’s (other than driving in ECO below 65mph!)
Lighter wheels, tires, skinnier tires, drive in a way conducive to using less gasoline. Other than this tuning, I believe 5 star tuning had a tune that should give some mileage, or at least power back. The problem with this is it'll probably void the warranty. Another option that may help is different fuel, 87 octane without ethanol, although this costs more per gallon. Somewhat difficult to increase the mileage in these things as like you said they're already huge/heavy.
 

UtahPowder

Tremor Fanatic
Joined
May 4, 2020
Messages
107
Points
28
Location
Utah
Current Ride
2020 F350 Platinum Tremor 6.7
Other than an occasional K&N filter change I’ve always left my trucks stock. I’ve also only had F150’s.
Any ideas on how to improve gas mileage on the 7.3? I know it’s a super duty and you don’t buy them for the gas efficiency. I’m just looking for a few suggestions that may allow me to squeeze out a couple more MPG’s (other than driving in ECO below 65mph!)
Trade it for a 6.7? IDK.
 
OP
Mountainman3

Mountainman3

Tremor Fan
Joined
Jun 11, 2020
Messages
37
Points
18
Location
NC
Current Ride
2016 F-150
Lighter wheels, tires, skinnier tires, drive in a way conducive to using less gasoline. Other than this tuning, I believe 5 star tuning had a tune that should give some mileage, or at least power back. The problem with this is it'll probably void the warranty. Another option that may help is different fuel, 87 octane without ethanol, although this costs more per gallon. Somewhat difficult to increase the mileage in these things as like you said they're already huge/heavy.
Thank you! About what I thought. I don’t want to void the warranty.
 

coachhomer

Founding Member
Joined
Jul 9, 2020
Messages
43
Points
18
Location
Florida
Current Ride
2020 F-350 Tremor
This was my post on another forums a couple of weeks ago...


Ok so I just did a mpg test on the new Tremor with 7.3L engine. Keep in mind these are on aggressive A/T tires. Mud terrains would yield worse results and road tires better. We drove two 50 mile stretches in Florida so no real hills and with minimal wind. First 50 miles cruise was set at 70mph. Second set of 50 miles was at 76mph. We stopped and filled up between and after each segment to get an accurate reading. This is an F350.

At 70mph we got 14.6mpg
At 76mph we got 13.5mpg

Hope this helps!

C
 
OP
Mountainman3

Mountainman3

Tremor Fan
Joined
Jun 11, 2020
Messages
37
Points
18
Location
NC
Current Ride
2016 F-150
This was my post on another forums a couple of weeks ago...


Ok so I just did a mpg test on the new Tremor with 7.3L engine. Keep in mind these are on aggressive A/T tires. Mud terrains would yield worse results and road tires better. We drove two 50 mile stretches in Florida so no real hills and with minimal wind. First 50 miles cruise was set at 70mph. Second set of 50 miles was at 76mph. We stopped and filled up between and after each segment to get an accurate reading. This is an F350.

At 70mph we got 14.6mpg
At 76mph we got 13.5mpg

Hope this helps!

C
Thank you for the respectful response. I appreciate it.
 

richtor

Tremor Junkie
Joined
Apr 4, 2020
Messages
824
Points
63
Location
Sonoma County
Current Ride
Race Red F250 Tremor
This was my post on another forums a couple of weeks ago...


Ok so I just did a mpg test on the new Tremor with 7.3L engine. Keep in mind these are on aggressive A/T tires. Mud terrains would yield worse results and road tires better. We drove two 50 mile stretches in Florida so no real hills and with minimal wind. First 50 miles cruise was set at 70mph. Second set of 50 miles was at 76mph. We stopped and filled up between and after each segment to get an accurate reading. This is an F350.

At 70mph we got 14.6mpg
At 76mph we got 13.5mpg

Hope this helps!

C
That mpg would only get stronger after 4 hours of highway driving. 15+ mpg is possible over several hours of highway driving at or near sea level. I think ftl got 15.5 mpg or so in the Rockies with 7.3 and 3.55 gears.

Another test was the 4.30 non tremor 7.3. 14.6mpg, 800 mile loop in the Rockies
 

Rock Taxi

Founding Member
Joined
Sep 14, 2019
Messages
368
Points
63
Location
Dallas, TX
Current Ride
2020 F350 6.7l King Ranch Tremor
Current Ride #2
2004 and 2008 Jeep Wrangler Unlimited
I have to wonder what a non-Tremor air dam under the bumper would do?

Seems like probably cheap, and I have to think it would make a difference?

Ed
 

SManZ

Tremor Buff
Joined
Jun 29, 2020
Messages
48
Points
18
Location
Fauquier County, VA
Current Ride
2020 F-250 SD Tremor XLT
Take some techniques from semi haulers;
  • Its more efficient to gain speed on a downgrade and use that energy to go uphill.
  • Think engine load, not road speed. Letting engine load dictate road speed means you'll slow on upgrades.
  • Braking doesn't in itself burn gas, but if you lose speed unnecessarily that you have to make up, that burns gas. Brake when you need to, coast when you can. Conserve momentum.
  • In traffic, try to pace so that you can keep moving. Those semis are crawling at a walking pace in traffic while everyone else is stop-go-stop-go because its less wear and tear on the truck, more efficient, and just easier for the operator.
  • Your mpg will typically tank past 65-70mph. Very generally; air resistance is exponential to speed. If you can take a local road at 50 instead of an interstate at 70, you'll save gas.
  • Look far ahead - you can't use these techniques without doing so.
  • Just don't be a damn hypermiler left-laning douchebag ;)
 

driftwoodsvt

First Tremor on Methods!
Staff member
Joined
Mar 4, 2020
Messages
697
Points
93
Location
Driftwood, TX
Current Ride
2020 F250 Tremor 7.3L Lariat w/ Ultimate & Sport
I get 12 MPG daily use and use ECO mode. I use my cruise control all the time and never stomp on it.
 
OP
Mountainman3

Mountainman3

Tremor Fan
Joined
Jun 11, 2020
Messages
37
Points
18
Location
NC
Current Ride
2016 F-150
Take some techniques from semi haulers;
  • Its more efficient to gain speed on a downgrade and use that energy to go uphill.
  • Think engine load, not road speed. Letting engine load dictate road speed means you'll slow on upgrades.
  • Braking doesn't in itself burn gas, but if you lose speed unnecessarily that you have to make up, that burns gas. Brake when you need to, coast when you can. Conserve momentum.
  • In traffic, try to pace so that you can keep moving. Those semis are crawling at a walking pace in traffic while everyone else is stop-go-stop-go because its less wear and tear on the truck, more efficient, and just easier for the operator.
  • Your mpg will typically tank past 65-70mph. Very generally; air resistance is exponential to speed. If you can take a local road at 50 instead of an interstate at 70, you'll save gas.
  • Look far ahead - you can't use these techniques without doing so.
  • Just don't be a damn hypermiler left-laning douchebag ;)
Great info! Thanks for taking the time to type this up!
 

driftwoodsvt

First Tremor on Methods!
Staff member
Joined
Mar 4, 2020
Messages
697
Points
93
Location
Driftwood, TX
Current Ride
2020 F250 Tremor 7.3L Lariat w/ Ultimate & Sport
I have to wonder what a non-Tremor air dam under the bumper would do?

Seems like probably cheap, and I have to think it would make a difference?

Ed
It would lower your clearance. Tremor has a raised air dam for that very reason.
 

JC_Tremor

Toasty
Joined
May 30, 2020
Messages
555
Points
63
Location
Tejas
Miltary
USN
Current Ride
Focus ST
Some good information in this thread. Been doing a lot of around town stop and go driving....currently about 9 on this tank, just under half a tank currently. Be better off driving my 4 cylinder commuter. Thanks for the information though everyone.
 

Latest Discussions

Ford Tremor Supporting Member Badge
Top