View Poll Results: Empty MPG Hwy

under 10

6.78%

10-12

33.90%

13-14

23.73%

15-16

16.95%

17-18

13.56%

19+

5.08%

Voters: 59. You may not vote on this poll

Dually MPG figures

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03-19-2014 | 10:50 AM

#31

575cat

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Joined: Oct 2007

Posts: 1,563

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From: minnesota

The last 6.4 f 350 4 wheel pu I did a couple weeks back it jumped to 19 hand calculated the customer claims , The 6.4 ford,s have a great tran,s hold,s the power .

03-19-2014 | 11:48 AM

#32

GETTINBYE

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Joined: Feb 2001

Posts: 484

Likes: 26

From: Elizabethtown KY USA

Not a dully but 2002 2500 HD Duramax, 265 tires, Edge with Attitude, 3.73. At the time was getting 18-19 highway @ 75ish.
Towed an Outerlimits 37 Stilleto from Lake Cumberland Kentucky to Dana Point Ca. running 75 (+ at times) and averaged around 10 if memory serves me right.

03-19-2014 | 12:38 PM

#33

Jupiter Sunsation

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Joined: Jun 2005

Posts: 11,903

Likes: 1,140

Quote:

Originally Posted by GETTINBYE

Is that 18-19 hand calculated or looking at the onboard computer?

I had the same truck in 2003, crew cab 2WD and the best that truck ever got was on the trip home from the dealer the day I bought it new at 17ish (truck was empty, drove it 500 miles before I got back home). Towing it was 9-10 as long as you didn't bury the pedal every time you got a chance to pass/pick up speed......cruise control helped this a lot.

03-19-2014 | 01:45 PM

#34

HTRDLNCN

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Joined: Nov 2003

Posts: 2,296

Likes: 3

From: Lake Travis ,Texas

1988 E350 boxtruck,
7.3 international non turbo..
C6 , 4.56 ,
no overdrive so diesel hits rpm wall at 67mph..
11-12mpg@55-60mph empty
11-12mpg@55-60mph fully loaded
11-12mpg@55-60mph towing the Carrera

03-19-2014 | 02:07 PM

#35

jmoore1225

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Joined: Feb 2007

Posts: 1,124

Likes: 13

From: Hamilton, Ohio

I see people claiming those #'s quite often on forums, I'd have be in it & doing the math to really believe it. I have been proven wrong many times tho.

03-19-2014 | 05:03 PM

#36

GETTINBYE

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Joined: Feb 2001

Posts: 484

Likes: 26

From: Elizabethtown KY USA

Quote:

Originally Posted by Jupiter Sunsation

Done by hand. There was one tank at some point years ago that it got a bit over 20. It has an injecter issue now (again) so it is not getting that good anymore.

03-19-2014 | 09:11 PM

#37

bowtie

Charter Member

Joined: Jan 2001

Posts: 667

Likes: 3

From: New Jersey

08 F450
6.4 totally stock
13-14 average
15 highway
8-12 towing, depending on what I'm towing. Use it for my marine business so I'm always towing different size boats.
On my 35' roller trailer with around 10,000 lbs on the trailer I get around 9
Everything is hand calculated because the lie o meter is full of ****. Always reads high.

03-19-2014 | 09:44 PM

#38

Cash Bar

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Joined: Nov 2002

Posts: 12,968

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From: On the way to a PR near you

Quote:

Originally Posted by 575cat

That,s a miracle right there , hand calc or lie-o-meter .

By hand. Full fill(or very close) every time. Had the cetane additive along though. Damn NE Arkansas and SE Missouri roads blow. Rough ride empty, except for 13 suitcases my GF packed.

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03-20-2014 | 08:08 AM

#39

SS930

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Joined: Aug 2003

Posts: 6,679

Likes: 3

From: At the office.

04 (or 05?) 3500, DRW, 5.9L, 4x4, 6in lift, 35's, std trans, 4.11 gears. Hand calculated hwy mileage sucks, 11mpg at 70 mpg. I haven't checked it towing the 46 cig on the hwy, but I would guess its around 6 mpg.

By contrast my old 97 SRW 2500 with 5.9L (12v), auto, 4x4, with 3.73's would constantly run 23+ mpg on the hwy at 75 mph, averaged 16 mpg over 750+ miles pulling a 37 OL. I miss the mileage of that truck...