Trucks & Trailers - Fuel mileage Towing & Empty

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View Full Version : Fuel mileage Towing & Empty


GoldenRod
03-23-2011, 02:54 AM
I'm sure this is a loaded question, Sure to bring on a brands war, But Enquiring minds want to know.

First my F-150 XLT 4.6L V-8 Empty on the Highway gets 21mpg
Trailering on the Highway 8 mpg 10,000 lbs
That's with a 7,700 lb Towing Package.

Second F-250 KR 6.7L V-8 Empty with a 1,150 Miles on her gets 14.5MPG City mixed with a little Highway mileage, and I'm hoping She gets better once broken in. The Dash reads 16.1 but Calculator shows 14.5 Honestly.

Havent hooked up to my boat yet, Obviously, Engine recomendations were wait until at least 500 Miles, and Truck Recomendations Recomended wait until 1,000 Miles I guess to get the Transmission seals seated etc.... And I just haven't had the need to pull my boat yet.

Now I know from other web sites, (Diesel Garage etc...) say they are getting in the Low 20's Empty and swear by 15 or 16 Loaded Trailering, I haven't seen those kinds of numbers yet, Although I will admitt I have a 4 WD.

That said and leave the B.S. and Fish stories Behind, What kind of numbers are you guys seeing with your Tow Vehicles, I definitely have an enquiring mind.

Thanks


Abel
03-23-2011, 04:27 AM
My duramax w/ the stock tires got 24-25 on the highway @ 75 mph. I went up in size to 265's, dropped to 20-21@ 70. 16-17 around town, that calculator, not DIC. Little harder around town in winter, thinks it's cuz of all the crap they dump in winter fuel and all the idle warm up time. We'll see how she does towing a real load in a couple weeks. If you're towing 10K more than just around town, go with the 3/4 ton.

martynmac
03-23-2011, 06:19 AM
2009 duramax 16-18 daily, Pulling my 3500 lb alumacraft 20ft 14-16
2011-one ton dodge single cab with cake feeder and bale bed 8-10 daily
If you want mileage out of a diesel get an older one, father-in-laws 2002 dodge gets 20-22 daily and 17-18 towing 24ft camper!


demjjm
03-23-2011, 06:58 AM
For you guys who change tire sizes,unless you reprogram the ECU for the larger tires, or compute the real miles vs. odometer miles when determining mileage you are not going to have accurate results.

Here is a tire calc that will show the MPH difference when changing sizes....
http://www.discounttire.com/dtcs/infoTireMath.dos

As for me on a new silverado 1500 for the 6.2 gas motor, and 4 wheel drive, I am averaging 14 in the city with a little highway driving mixed in and 7 towing the boat which is about 9000 lbs. This is with 1500 miles on the truck, so I am hoping it will loosen up and show somewhat better results. Since I live in FL and it is so flat I am interested in doing a comparison between tow / haul on and off when towing. My tranny did not hunt around when I had it off, but being a new truck, I still turned it on.

dadriva
03-23-2011, 09:33 AM
2008 F250 6.4 diesel crew cab 4x4

Unloaded 14-15 mixed city and highway

Loaded (11,000 lbs) 8-10 on some flat and some very mountainous terrain

I think it sucks but theres not much thats a whole lot better out there regarding MPG's for what I need to do

DFreedom
03-23-2011, 09:56 AM
2006 Tundra 4.7 L V-8 16 - 18 mixed city/hwy
With boat - 12 - 13

It is cheaper for me to store my boat on teh coast 2 hours away than it is to haul it back and forth. Not to mention I greatly reduce wear and tear on truck and trailer.

Snowwolfe
03-23-2011, 10:34 AM
This is my mileage in the summer. Truck is a 2002 Ford Crew cab long bed, 250 Power stroke, auto, 4wd. Added a 3 inch exhaust to it a couple of years ago. The exhaust removed some of the lag and increased the highway mileage.
Running around town with about 800 pounds in the bed I average 14.5 to 15
If I keep the cruise on 55 on a long trip 20 mpg is easy and have seen up to 24-25.
But if I add anything to tow the mileage falls like a rock. On a drive from WA to Alaska I towed back a boat/trailer combo that didnt weigh more than 2,000 pounds and only averaged 14 over 2,200 miles.

Am guessing our ocean boat and trailer combo weighs in at about 8,000 pounds. When towing it average 11-11.5.

I anticipate every stop and coast as much as I can. Truck has 83K on it and just two weeks ago had my mechanic check out the brakes. Fronts still have 50% left and rears 75%.

TopCat
03-23-2011, 10:36 AM
Dodge 2500 4x4/8l gas V-10
11 empty, 6-7 towing 9000 lb

bayrunner16
03-23-2011, 11:30 AM
2003 1500 Z71...14/15 unloaded @ 75 on highway.
... 9/10 pulling 23 Maycraft PH @ 55 on highway.

bear685
03-23-2011, 11:36 AM
03 Expedition 5.4 - 155K miles - stock 2wd. mixed driving - 14.5 mpg. towing big boat - 9 mpg. i never drive over 75 on hwy, last tank was 80/20 city/hwy for 14.5 - generally on a long run at 73 i get 16mpg+ havent seen 17 since 40K on the truck.

blackdawg
03-23-2011, 11:49 AM
2007 5.4 F150 on 35's and 4.56 gears, about 13 unloaded all around, about 6-8 towing ~5-10k, about 8-10 towing up to 5k.

Abel
03-23-2011, 12:11 PM
Should've added, towing my center console, about 3500lbs, I get about 16 highway. As for the tire size, I prob get a little better than what I figure. Reason being the larger tires cover more distance than the comp says, but mine is so slight that's it's not woth forking over the cash for the corrections.

A Few Dollars
03-23-2011, 12:17 PM
2008 Dodge Hemi Megacab

Empty MPG - Bad
Towing MPG - Worse.

:grin:


15 & 9

sanchoco
03-23-2011, 12:38 PM
2005 Chevy 2500hd 6.0l Gas, 15 average driving and 9 pulling my 31 contender. truck has 120,000 miles on it and stock tires. I have no computer so all calculated numbers. Have not towed my flats boat with it yet. Only used it at the ramp at my old house.

jsagan77
03-23-2011, 04:05 PM
2008 Tahoe Hybrid tows a Century 2200 CC. I get 23 combined every day driving and 12 towing.

joshb
03-23-2011, 05:49 PM
2005 Ford Excursion 6.0 4x4 15mpg mixed city/hwy 11 towing 5k on the interstate

dc_gentry
03-24-2011, 09:22 AM
2010 F-150 XLT SCREW/max tow pkg towing Parker Pilot House @ #6500 gets 19-22 mpg highway without the trailer and 11-14 mpg with the trailer (depends on terrain and wind). I don't drive over 60 mph when towing because I don't like the hassle of passing traffic dragging the trailer, and @ 65+ mileage drops to 9 mpg or less.

Jonboater
03-24-2011, 12:01 PM
Should've added, towing my center console, about 3500lbs, I get about 16 highway. As for the tire size, I prob get a little better than what I figure. Reason being the larger tires cover more distance than the comp says, but mine is so slight that's it's not woth forking over the cash for the corrections.

My 2005 2500HD registers faster then actual with the stock 245s so your probably right about the 265s being close enough.

I ran 285s for 50K and put the stock tires back on to burn them up. After doing that I couldn't have my speedo off so rather then going back with the stock speedometer settings I used EFILive and a GPS to "fix" my speedo with the stockers, roughly 3-4 mph off at 70. If you actually keep 80lbs in the rear it might not be off as much. I usually keep about 50lbs.

2005 2500HD stock fuel/timing diesel crew 2wd
HW 20mpg
City 17mpg
Towing 15mpg (small boat around 3K)

demjjm
03-24-2011, 12:05 PM
"If you actually keep 80lbs in the rear it might not be off as much. I usually keep about 50lbs"

Jonboater, what does weight in the rear have to do with the speedo and tire size?

Jonboater
03-24-2011, 12:26 PM
"If you actually keep 80lbs in the rear it might not be off as much. I usually keep about 50lbs"

Jonboater, what does weight in the rear have to do with the speedo and tire size?

Nothing? lol

Sorry not weight, tire pressure. Going from say 40lbs to 80lbs increases your tire height by straightening your sidewall considerably. Easy 1-2 mph from what I have seen on my truck.

Back-in-Black
03-24-2011, 01:47 PM
2002 dmax crew 4x2. Around town I see from 15 all the wat to 18+ mpg not towing. Highway with cruise set at 77 mph it gets 19.666666666

Towing 10k lbs at 70 mph I get 10 mpg and towing the little boat (maybe 4k lbs) I see 13-14. Usually tow it at 75.

Towing a 16' x 7'W x 8'H cargo trailer at 75 lightly loaded I see around 13-14.

n3up
03-25-2011, 06:53 AM
97 F150 SC XLT 4X4 w/Leer cap.
4.6L 3.55LS

12 city, high 17's highway.

Towing 16ft car hauler loaded to about 5000K gets 7mpg highway.

Expecting the same when I bring the boat up from Florida.
The boat is a 96 Leisurecat 26 on an Owens & Sons aluminum trailer.

Bill Erhardt
03-25-2011, 08:08 AM
Last July/August I drove my 2005, 4.7l Tundra with about 60k miles on it from the Baja peninsula of Mexico to Florida to pick up a new Bluewater 23T. From California to Florida holding at 70 mph the Tundra averaged a little over 17 mpg. On the return trip towing the boat, which weighed 6,140# w/trailer on a scale in Texas, holding at 55 mph I was pleasantly surprised to average a bit over 11 mpg. Needless to say, both numbers are significantly lower on Mexican roads.

andrey
03-25-2011, 04:57 PM
1993 Camry - 16 towing, 21 daily

bjhinson
03-25-2011, 07:18 PM
2009 F-250, EGR disabled, DOC/DPF deleted, Spartan 250 tune for daily driving/towing. Towing 31ST Contender, I'd guess 12,000# on the trailer with decent fuel load, usually get 9-11MPG between 70 and 75 mph on flat terrain. Unloaded between 70 and 75, get between 19 and 23 mpg. All figures hand calc'd. In STOCK form, got significantly less mileage, and significantly less fun/performance. I think the 6.4L is a great engine after you remove about 100# of emissions bullshit, load a decent tune (including a transmission file tune), and finally learn how to keep the rear wheels from spinning unintentionally.

Think I'll keep the old '09 F-250 until such time the new 6.7L's can outperform them without breaking the bank.

rtmadm00
03-26-2011, 07:00 PM
'05 Ford F250 Crew Cab with 6.0 PSD, 285/70R17 vice stock 265/75R17 and 98,000 miles. Around town 15.0mpg, highway around 18.5@70, 19.5@65. When I'm towing my 21 CC which weighs in at around 4K boat/fuel and trailer I get 10.5@70+ when going from Va Beach to Key West. If I drop to 65mph I get around 11mpg.

baypro21
03-27-2011, 03:22 AM
My V-8 Dodge Dakota got 15mpg highway and 8mpg while towing my 23'er. My Dodge 2500 diesel weighs 2500# more and gets 18mpg highway and haven't towed enough to know that yet.

bamaboy473
03-27-2011, 05:26 AM
I learned something by accident two days ago. On the way to pick up the boat, my Excursion got 19MPG going 68MPG (1900RPM).

Coming back with the 24' boat, I blew a tire, so from then on I went 55 just in case something happened again. At 55 with a 5500 pound load, the 7.3L diesel got 15.2MPG on the lie-o-meter (which is within 1 MPG of accurate).

dadriva
03-27-2011, 09:48 AM
2009 F-250, EGR disabled, DOC/DPF deleted, Spartan 250 tune for daily driving/towing. Towing 31ST Contender, I'd guess 12,000# on the trailer with decent fuel load, usually get 9-11MPG between 70 and 75 mph on flat terrain. Unloaded between 70 and 75, get between 19 and 23 mpg. All figures hand calc'd. In STOCK form, got significantly less mileage, and significantly less fun/performance. I think the 6.4L is a great engine after you remove about 100# of emissions bullshit, load a decent tune (including a transmission file tune), and finally learn how to keep the rear wheels from spinning unintentionally.

Think I'll keep the old '09 F-250 until such time the new 6.7L's can outperform them without breaking the bank.

Not calling you a liar or callng you out but I am on the exact same setup (spartan, doc/dpf delete, 250 tune etc..) and am seeing nowhere near those numbers! I wish I did as 15 mpg is killing me......

Do you tow on the 250 tune?

tango2echo
03-27-2011, 11:51 AM
Still working to optimize, but this is the most current data:
2008 Chevy Ex. Cab Z-71 4X4
4.8L V-8
3.55 Rear end
4L60E with towing maximizer
275/70/18 Michelin LTX/MS2's 41psi front 44psi rear.
Tool box in bed, bug guard on hood, ventvisors on windows. Mobil 1, all Fluids synthetic. Trans cooler, oil cooler, dual batteries, class 4 hitch.
Everyday driving around town average over 5,000 miles from Dec-Feb; 17.6mpg
Highway driving average over 2,300 miles with cruise set 5 over limit; 20.1mpg
Towing 4800lb load average over 1,200 miles, cruise set at limit (60mph); 14.4mpg
Towing 8000lb load over 700 miles, cruise set 10 under (50mph[60-10]); 10.2mpg

t2e

crothers
03-28-2011, 05:19 AM
'09 F150 5.4L 3valve, 6 spd auto, 3.73. Best it can do is 18 @75mph empty. Towing my 7000lb boat/trlr, 9mpg at 70mph.
Latest confimation. Bumping from 75 to 77-78 moves the "economy" down to 17.3mpg. Sigh. Comfortable ride with the Supercrew wheelbase, though. WHO can drive 65 where this tuck will return an honest 20mpg? Not me. And I am a geezer!

redneckbaitflinger
03-28-2011, 07:30 PM
02 GMC Sierra 4x4 cc lwb with 8.1 and man 6spd gets about 13 on the interstate unloaded and 10 around town. Got 7mpg the other day pulling a 31 Contender down to the beach.

Used an 01 7.3 to pull the same boat back from MD, and the powerstroke got 9mpg. It was 2wd.

The trip the other day was the first time I had ever pulled anything with any kind of weight with a gas motor. I was surprised how well it did compared to the diesels that I've owned in the past.

mac83
03-30-2011, 05:14 AM
2005 Silverado 4x4...13.4 MPG around town, 10 MPG towing my 226 Grady White
Truck got 19.4 MPG otw to S.C. and 10.4 MPG towing it back

ncmedic
03-30-2011, 12:06 PM
2003 Dodge ram 1500 4X4 quad cab. unloaded mixed driving 13.5 towing my 08 sea pro 228 7 at 65mph. the hemi will fly but I have not been impressed with it's towing.

Stratos22cc
03-30-2011, 07:05 PM
2006 Dodge Ram 4door 2500 4x4 turbo diesel highway 22 to 24 mpg pulling my 22' stratos cc i get around 17 mpg if i watch my speed and stay around 60 mph or less

jhendric
03-31-2011, 06:56 AM
Very Timely Question as I just completed some really good reasearch on this. I have a 2002 F350 with the 7.3 liter diesel. Last week I drove from NC to Disney World FL. No Trailer. First tank I set cruise control 9mph over the posted speed limit which is 70 for most of that trip. I got 15.74 MPG exactly. on the way home I set the cruise at 70mph (just under 2000 rpm) and I got 19.91 MPG. It is amazing to me that that extra 9mph cost 4 mpg!

Towing my numbers are less air tight....I tow 7500 pounds and get around 14 mpg if I leave overdrive on. If I turn overdrive off my rmps go up to 2500 or more at 65-70 mph and my MPG falls to around 9.

petrel
03-31-2011, 08:37 AM
1997 F350 7.3L Super Chip program Tire size taken up from 235 to 285, no adjustment in figures.

14-15mpg mixed town/highway to 75mph
8mpg towing 11,000

Although I don't have any scientific data, I also believe that diesel with a higher Cetane rating tends to pull better with less smoke on acceleration.

dave11
04-01-2011, 10:53 PM
F250 Super Duty with the V10

Highway mileage

15+ empty @ 70MPH
12 towing a 2500# boat

This is average MPG over 1500 miles each way. Mostly highway miles.

bunger79
04-02-2011, 08:04 AM
2007 Dodge Ram 3500 DRW
Empty City: 10
Empty Highway: 16-18 @ 65MPH
Towing Highway: 10-12 @ 65MPH 10,000lb boat

BlueWaterRunner
04-05-2011, 10:53 AM
2000 F350 SRW 2wd, automatic, 3.73 axle ratio.

Mixed city/hwy unloaded: 16-18
All hwy unloaded 19-20 with tach under 2k (68 mph)

Loaded with camper only highway: 13-14
Loaded with camper and boat: 11-13

Never checked the millage just towing the boat without the camper.

I will soon be going to a 3.55 axle ratio for increased fuel millage.

Billdc
04-08-2011, 11:16 AM
2008 Dodge Hemi Megacab

Empty MPG - Bad
Towing MPG - Worse.

:grin:


15 & 9

I hear you!!!!!!! 08 Aspen with Hemi (variable displacement) 14 everyday, 8-9 towing about 6K. One night I drove 15 miles of 4 lane with lights slow and easy and the OBC clocked 21. I just couldn't stand it and had to drive normally.



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