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Apr 11, 2022 | 09:22 AM

#31

Poncho450

Lead Driver

Joined: Oct 2014

Posts: 5,946

Likes: 1,359

From: NY/Canada border

Just returned home from vacation. NY/Canada border to Daytona Beach. 2022 F 350 SRW. 7.3 with 3.73 rears. Crew cab short box with tonneau. 295/70R18 Cooper tires. About 3k or less miles on the truck. On the way down, hauling a 7x18 enclosed trailer with 4 Harleys, 5 people, luggage, a few tools and 2 spare trailer tires. I did not use tow/haul or any of the transmission modes. 1250 miles. 8.4 MPG. Speeds were anywhere from 60 to 75.
On the return trip there was one less motorcycle and one less person/luggage. I left the truck in Eco the entire way. 9.1 MPG on the trip home.

Apr 11, 2022 | 09:30 AM

#32

Icelink

Tuned

Joined: Nov 2019

Posts: 377

Likes: 33

From: KELOWNA

2019 CCLB 4.30s on 37x12.5x18 , I'm lucky to get 10 MPG highway miles unloaded , usually 9.8 mpg is the best I've seen , wonder if something is wrong with my truck?

Apr 11, 2022 | 09:37 AM

#33

RidgwaySD

Cargo Master

Joined: Jul 2021

Posts: 2,970

Likes: 2,407

From: Ridgway, CO

Quote:

Originally Posted by Icelink

2019 CCLB 4.30s on 37x12.5x18 , I'm lucky to get 10 MPG highway kms unloaded , usually 9.8 mpg is the best I've seen , wonder of something is wrong with my truck?

LOL, Huge truck, Huge tires, Low gears, Big engine, Good Luck.

Apr 14, 2022 | 12:22 PM

#34

Falcon67

Mountain Pass

Joined: Mar 2006

Posts: 207

Likes: 78

Average 12ish around here. A bit more closer to sea level and surprisingly more in NM as the altitude goes up towards Albuquerque. 7.3L, 3.73 gear 4x2 DRW. I run 75~78 usually.

Apr 14, 2022 | 08:46 PM

#35

ATC Crazy

Hotshot

Joined: Jun 2003

Posts: 12,353

Likes: 4,388

From: SW VA

Quote:

Originally Posted by RidgwaySD

LOL, Huge truck, Huge tires, Low gears, Big engine, Good Luck.

The low gears are helping him with 37’s. But the rest is definitely correct!

Apr 15, 2022 | 11:19 AM

#36

shamrockthecasbah

Cross-Country

Joined: Dec 2016

Posts: 64

Likes: 18

Quote:

Originally Posted by Icelink

2019 CCLB 4.30s on 37x12.5x18 , I'm lucky to get 10 MPG highway miles unloaded , usually 9.8 mpg is the best I've seen , wonder if something is wrong with my truck?

Have you corrected your speedo to account for the larger tires? If not, your calculated mpg is lower than reality because of the 37" tires vs the factory 32'/34' size.