Fuel Usage at 5020 Miles
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Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
Fuel Usage at 5020 Miles
Here's the totals so far at 5020 miles on the odometer:
Notes:
Notes:
- 4 tanks used in purely towing. MPG: 11.02, 10.57, 10.37, 11.73
- Best tank mileage: 18.02 (Mostly freeway, some city)
- Worst tank mileage: 10.37 (Pure towing, hard, uphill, into the wind and high elevation)
- So-called Lie-O-Meter is pretty truthful at 99.81% accuracy. I compare actual fuel used with the Trip B reading which has never been reset since truck rolled off the line at KTP. The lie-o-meter needs a new name and some respect. Over time it is turning out to be extremely accurate.
Tuned
Joined: Jul 2010
Posts: 408
Likes: 2
From: Canada
That seems pretty consistent with what I am getting in similar conditions so far. I live about 600 metres higher than the valley so going down is great but coming up pegs my instant fuel economy meter at the max (off the charts) - I've learned to ignore it.
Funny thing, our instant fuel economy graphic is inverted to yours so where in the US, more green = good, here it is bad. But it sure is purrtty coming up the hill...
Funny thing, our instant fuel economy graphic is inverted to yours so where in the US, more green = good, here it is bad. But it sure is purrtty coming up the hill...
Postmaster
Joined: Apr 2009
Posts: 3,839
Likes: 2
Nice presentation. I am keeping track but not with that much precision. I also use the trip meter. It is also nice to see that I am not the only one who uses the fuel computer. I have found it to be pretty accurate as well.
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
GREAT report! Fantastic details...
Epic -- One question:
Did you update the trucks computer with your NEW larger tire size? It's something only the dealer can do (at least on the previous generation SuperDuties). If not, then your mileage readings might be off...
Thanks!
biz
Epic -- One question:
Did you update the trucks computer with your NEW larger tire size? It's something only the dealer can do (at least on the previous generation SuperDuties). If not, then your mileage readings might be off...Thanks!
biz
Elder User
Joined: Mar 2007
Posts: 879
Likes: 0
From: at the truck pulls
I have kept the main screen un-reset(is that a word?), I use trip A for trips, and trip B for each fuel fill up.
City running around I'm getting 14.4 worst to 16.2 best. I think the continuos one is at about 14.6, I've had one 1500 mile road trip unloaded that helped a lot, and one 2000 miles road trip averaging 87 mph that hurt a lot. Not much towing yet, just to the lake camp ground.
City running around I'm getting 14.4 worst to 16.2 best. I think the continuos one is at about 14.6, I've had one 1500 mile road trip unloaded that helped a lot, and one 2000 miles road trip averaging 87 mph that hurt a lot. Not much towing yet, just to the lake camp ground.
Lead Driver
Joined: Feb 2005
Posts: 8,011
Likes: 2,688
From: The Great State of Texas
GREAT report! Fantastic details...
Epic -- One question: Did you update the trucks computer with your NEW larger tire size? It's something only the dealer can do (at least on the previous generation SuperDuties). If not, then your mileage readings might be off...
Thanks!
biz
Epic -- One question:
Did you update the trucks computer with your NEW larger tire size? It's something only the dealer can do (at least on the previous generation SuperDuties). If not, then your mileage readings might be off...Thanks!
biz
Epic,
What would your avg fuel economy be if you removed the towing fuel economy samples?
Lead Driver
Joined: Nov 2005
Posts: 5,249
Likes: 4,275
From: Kaysville Utah
A lot of the programers will reprogram for larger tires. It's not a dealer only option. It was one of the reason I had the Edge Evolution on my 2006 truck. I never turned the power up, ran it in stock mode the entire time I owned the truck, But I did reprogram for the Toyo 285/75r18 tires that I put on.
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Junior User
Joined: Aug 2010
Posts: 97
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A lot of the programers will reprogram for larger tires. It's not a dealer only option. It was one of the reason I had the Edge Evolution on my 2006 truck. I never turned the power up, ran it in stock mode the entire time I owned the truck, But I did reprogram for the Toyo 285/75r18 tires that I put on.
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Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
I adjusted the low mileage tanks to equal 15mpg each and it changed the overall average to 15.78. Pretty big difference. I have to go back and check my logic in that assumption though. I'll try a couple of different scenarios tomorrow.
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Toyo MT LT315/60R20 = 593 RPM
OEM tire = ???
Which could result in the 3% you speak.
Again...I am going off the generation 1 ('99 - '04) SuperDuty way of doing it. I am planning a 2012 model year as soon as they arrive.
biz
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
My absolute record is 23.4 but not for very long.
That was flat terrain, 50 MPH, gear 6 and cruse control driving so very controlled conditions. For anyone who has traveled the Natchez Trace, this wouldn't be impossible empty. I would have a hard time reproducing that high number most of the time.
This picture shows 22.5 and is mostly where it stayed for 40 miles during a 104 mile drive.
I was not towing anything but had 6th locked out and was in T/H mode.
I'm sure it would have been a little better had I allowed 6th.
I was experimenting. My max speed was 60 with two 45 MPH zones as I traveled through small towns. I was impressed.
With a 2 ton tractor and 18 ft equipment trailer, I max out in the mid 12's which is still decent. I think it's safe to guess the 3.31 has a little more fluctuation related to MPG empty vs towing over the 3.55 but someone can gladly provided a more educated answer.
I'll calculate per tank some other day.
Yes I know, the TPMS came on. I checked and my PSI was fine so IDK what it keeps fussing about.
That was flat terrain, 50 MPH, gear 6 and cruse control driving so very controlled conditions. For anyone who has traveled the Natchez Trace, this wouldn't be impossible empty. I would have a hard time reproducing that high number most of the time.
This picture shows 22.5 and is mostly where it stayed for 40 miles during a 104 mile drive.
I was not towing anything but had 6th locked out and was in T/H mode.
I'm sure it would have been a little better had I allowed 6th.
I was experimenting. My max speed was 60 with two 45 MPH zones as I traveled through small towns. I was impressed.
With a 2 ton tractor and 18 ft equipment trailer, I max out in the mid 12's which is still decent. I think it's safe to guess the 3.31 has a little more fluctuation related to MPG empty vs towing over the 3.55 but someone can gladly provided a more educated answer.
I'll calculate per tank some other day.
Yes I know, the TPMS came on. I checked and my PSI was fine so IDK what it keeps fussing about.
Posting Guru
Joined: Mar 2003
Posts: 1,521
Likes: 0
Here's the totals so far at 5020 miles on the odometer:
Notes:
Notes:
- 4 tanks used in purely towing. MPG: 11.02, 10.57, 10.37, 11.73
- Best tank mileage: 18.02 (Mostly freeway, some city)
- Worst tank mileage: 10.37 (Pure towing, hard, uphill, into the wind and high elevation)
- So-called Lie-O-Meter is pretty truthful at 99.81% accuracy. I compare actual fuel used with the Trip B reading which has never been reset since truck rolled off the line at KTP. The lie-o-meter needs a new name and some respect. Over time it is turning out to be extremely accurate.
Junior User
Joined: Jul 2004
Posts: 87
Likes: 0
I'll possibly buy one of them.