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Old July 9th, 2011, 05:15 PM   #41
sodapop
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Truck:
1999 Chevy Tahoe LT

Drive:
4WD

Engine:
5.7 V8 Gas

Trans:
Auto - 4L60E

Axle Ratio:
3.42 Open and Factory G80 "locking" differential (I've replaced the rear axle)

Tires:
265/75 R16 (stock is 245/75 R16)

Mods:
None

Best Fuel Economy Empty:
13/14 City
15-17 Hwy

Average Mixed Driving: 12.5 mpg

Best Fuel Economy Loaded: (LARGE popup camper 9500lbs & Jeep on trailer 11650 lbs)

W/Popup Average Hwy: 11.5 mpg / Best: 13 mpg
W/Jeep Average Hwy: 8-9 mpg / Best: 10.5 mpg
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Old July 9th, 2011, 05:37 PM   #42
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2001 chevy 2500 short box ext cab non hd
6.0l
3.73 gears
4wd
265/75/r16 with 70 lbs of pressure
K&N cold air intake, dual exaust, custom tuned pcm.

Idk what my city mpg is
towing a 24' bumper pull camper with a full load out @ 70 mph over large hills with the ac on in tow/haul: 11 mpg.

Last edited by steveo; July 9th, 2011 at 08:17 PM.
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Old July 9th, 2011, 08:10 PM   #43
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Quote:
Originally Posted by steveo View Post
2001 chevy 2500 short box ext cab non hd
6.0l
3.73 gears
4wd
265/75/r16
K&N cold air intake, dual exaust, custom tuned pcm.

Idk what my city mpg is
towing a 24' bumper pull camper with a full load out @ 70 mph over large hills with the ac on in tow/haul: 11 mpg.
Impressive.

I need to change my exhaust and take a look at my intake...
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Old July 9th, 2011, 08:14 PM   #44
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Quote:
Originally Posted by ScOoTeR View Post
Impressive.

I need to change my exhaust and take a look at my intake...
I give it 20 minutes before hosejockey is in here calling me a fucking liar. Whatever you do route the pipes out the side. My pipes stick out the back and the noise rolls off my camper. I just keep the metal turned up wide open. Also, I put 70 lbs in my tires when towing.
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Old July 9th, 2011, 08:34 PM   #45
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I planned on starting by dumping the stock muffler and replacing it with a section of straight pipe - just run the cats for noise abatement.
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Old July 9th, 2011, 08:39 PM   #46
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Truck: 2001 Ford Excursion

engine: 7.3 powerstroke

drive: 4wd

trans: auto

mileage: 189,000

tires: 34.6 Duratrac

mods: Bully dog programmer, straight pipe

Best fuel economy: 18 mpg @70-75mph

Best fuel economy towing: 13.5 mpg @ 70

Keep in mind this is in performance mode. My programmer battery died and is stuck on performance. Have to make a call to the company

Last edited by jeepbrattt; July 9th, 2011 at 08:43 PM.
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Old July 9th, 2011, 08:42 PM   #47
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Quote:
Originally Posted by ScOoTeR View Post
I planned on starting by dumping the stock muffler and replacing it with a section of straight pipe - just run the cats for noise abatement.
Mine is duals from the manifold back with cats. Its a throaty bitch at 4500 rpm.
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Old July 9th, 2011, 09:01 PM   #48
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Truck:
2002 GMC 2500

Drive:
4WD

Engine:
Duramax

Trans:
auto-allison

Axle Ratio:
3.73

Tires:
265/75 R16 (stock is 245/75 R16)

Mods:
None

Best Fuel Economy Empty:
Dont know, i bought to tow with and thats what i do with it


Average Economy Loaded: 10 MPG , That's about 20,000lbs to 21,000lbs going 74mph



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Old July 9th, 2011, 09:37 PM   #49
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after seeing this thread i thought id see what the farm diesel gets hauling a gooseneck loaded down with round bails truck is a 1995 4x4 f-250 psd stock with a 5spd manual 3.73 gears and 235/75/r16s and weighs in at 6129 unloaded add the 2100lb empty gooseneck then 22 900lb round bails puts us at a combined weight of 28029lbs and at 40mph in 5th gear (overdrive) 2wd we get 4.861mpgs
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Old July 10th, 2011, 01:07 AM   #50
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Quote:
Originally Posted by Windsorf350 View Post
after seeing this thread i thought id see what the farm diesel gets hauling a gooseneck loaded down with round bails truck is a 1995 4x4 f-250 psd stock with a 5spd manual 3.73 gears and 235/75/r16s and weighs in at 6129 unloaded add the 2100lb empty gooseneck then 22 900lb round bails puts us at a combined weight of 28029lbs and at 40mph in 5th gear (overdrive) 2wd we get 4.861mpgs
That diesel engine supposed to be rev at 2K rpm for work not under 1500 rpm it LUGGING engine badly. If I own company and find driver who did like that. I would yell at them if you break you pay. Keep rpm up 2K when you are tow.

My 2000 F350 diesel get WORST mileage if I let rpm around 1500 at HWY I only get 14 mpg if I keep rpm up 2K I get 16 mpg.

ZF5's overdrive is TOO weak to handle that load. Keep in 4 gear for tow. 5 Gear isn't that strong. You will find tons info at FTE forum.
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Old July 17th, 2011, 12:26 AM   #51
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Quote:
Originally Posted by MilwaukeeF350 View Post
That diesel engine supposed to be rev at 2K rpm for work not under 1500 rpm it LUGGING engine badly. If I own company and find driver who did like that. I would yell at them if you break you pay. Keep rpm up 2K when you are tow.

My 2000 F350 diesel get WORST mileage if I let rpm around 1500 at HWY I only get 14 mpg if I keep rpm up 2K I get 16 mpg.

ZF5's overdrive is TOO weak to handle that load. Keep in 4 gear for tow. 5 Gear isn't that strong. You will find tons info at FTE forum.
it revs like crazy close to 3 grand i dont know why but thats why we only do 40 its just a beat up ole farm truck
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Old July 17th, 2011, 04:13 AM   #52
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Truck:
2003 Dodge Ram 1500 4X4 Quad Cab
Drive:
4WD
Engine:
5.7 Hemi
Trans:
Auto
Axle ratio:
3.55:1
Tires:
265/70R17
Mods:
None

Best Fuel Economy Empty
17 mpg

Best Fuel Economy Loaded
10 mpg

Load / Driving:
XJ on trailer cruise control set on 64 OD turned off.

Last edited by curbdog17; July 17th, 2011 at 04:17 AM.
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Old July 17th, 2011, 11:37 AM   #53
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Quote:
Originally Posted by curbdog17 View Post
Truck:
2003 Dodge Ram 1500 4X4 Quad Cab
Drive:
4WD
Engine:
5.7 Hemi
Trans:
Auto
Axle ratio:
3.55:1
Tires:
265/70R17
Mods:
None

Best Fuel Economy Empty
17 mpg

Best Fuel Economy Loaded
10 mpg

Load / Driving:
XJ on trailer cruise control set on 64 OD turned off.
one of my co workers has the exact same truck. He gets the same mileage.
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Old July 25th, 2011, 04:04 PM   #54
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FOR SALE

Truck:
2005 F350 CC LB
Drive:
4x4
Engine:
6.0L PSD
Trans:
manual
Axle ratio:
3.55:1 or 3.73:1, need to verify
Tires:
stock 18"s
Mods:
No perforamce mods, just engine monitors (Edge)

Best Fuel Economy Empty (7500 lb):
18 mpg at 70 mph

Best Fuel Economy Loaded (21,000 lb combined):
13.5 mpg at 63 mph. 10 mpg at 72 mph.

Load / Driving:
extra tall 30'/39' enclosed gooseneck, fully loaded with buggy, gear, tools, spare parts, etc



this was without spare parts, weekend food, beverages, coolers, etc.
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Old August 16th, 2011, 02:44 PM   #55
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Just went to the UP and back, on the way up, 70 mph lower, 60 mph in the upper. 17 mpg average.

On the way home, 60 mph upper, 65 mph lower, 19 mpg average.
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Old August 16th, 2011, 04:26 PM   #56
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Not all of us have real trucks....

Truck: 2004 Jeep Wrangler Unlimited
Drive: 4x4 (part time)
Engine/Trans: 4.0L/42RLE
Axle Ratio: 3.73
Tire Size: 33"-ish
Mods: K&N panel, HD Trans cooler

Best Fuel Economy Empty: 17.6mpg (4300#) cruise set at 66mph, OD off

Best Fuel Economy Loaded: 13.1mpg (8100# combined weight) cruise set at 61mph, OD off

Load: Starcraft 13RT Popup with a full load on the "front porch" and a Jeep full of family+camping crap

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Last edited by phittie1100; August 16th, 2011 at 04:32 PM.
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Old August 29th, 2011, 08:02 PM   #57
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2008 Freightliner Columbia
Drive:
4WD (Twin screw w/locking diff)
Engine:
Mercedes Line 6 12.9L - 450 Hp 1650 Lbft
Trans:
12 sp Meritor Auto-shift
Axle ratio:
3.42:1
Tires:
275/80R 22.5 (40's)
Mods:
Stone Stock

Fuel Economy Loaded (45,00 lb combined (est)):
10.1 mpg (best/flatland) 8.9 mpg (hills in Montana and Colorado)
Numbers according to digital dash.
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Old August 29th, 2011, 09:13 PM   #58
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Quote:
Originally Posted by Fullsize4life View Post
Truck:
1995 Dodge Cummins
Drive:
4x4
Engine:
12 vlave cummins
Trans:
47rh auto
Axle ratio:
3.55
Tires:
285/70/17 lrd
Mileage / Performance Mods:
4" turbo back strait pipe
No fuel plate, 3k gov springs
BHAF
Craftsman stacked with a snap on tunes


Empty truck at 8200lbs i believe 14-15 around town
best of 24 mpg on high way 70 mph
18 mpg towing jeep on flat bed on high way. 70 mph
15 towing jeep on flat bed cross country stop and go bs
figured I would update this. I pulled 26.4 mpg on the way to GR to a Dr appointment last week. Then while towing my jeep to DI the next day got 13 towing the jeep on a 12,000lbs rated trailer along with the truck and jeep loaded down with all our stuff for 5 days. While towing it was a combination of stop and go back roads and hi-ways with a worst of 11 and a best of 16. Had i went less than 70mph on the hi-way i think i would have gotten better.
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Old September 4th, 2011, 01:14 PM   #59
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Quote:
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Truck:
2006 GMC 2500HD ECSB
Drive:
4WD
Engine:
6.0 gas
Trans:
4L80E
Axle ratio:
4.10:1
Tires:
285/75/R16 Toyo Open Country AT Load D
Mods:
K&N "FIPK II" Load Lifter 5000 air bags

Best Fuel Economy Empty (5500lbs):
15mpg hwy
Best Fuel Economy Loaded (10,500-11,000lbs my best guess):
8.7 around 100 miles each way

Load / Driving:
18' steel deck open car hauler with my s10 truggy on the back and quad
I was able to pull a solid avg of 15 mpg hauling this load up the dunes a couple weekends ago.. backed down to 65mph and wasnt in a hurry .
the front quad catches a lot of wind,
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Old September 4th, 2011, 02:05 PM   #60
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Unit
2001 250SD
w/2004 Coachman Chaparral 298RKS fifth wheel



Specs

Truck

7.3 PSD
no internal mods
Superchips monitor with 40hp tow tune
Fleetguard 6637 air filter

4x4 3.73
285 75/16 Dunlop Dueler Revo's 10ply

7370 lbs unloaded, fuel full

5ver

loaded for three weeks in the Rockies.
all tanks empty
30 feet overall
12.5 tall
101 wide
225 75/15 10ply Carlisle's
7980 ugvw



We scaled out at 18.7K and change,

Trip mileage 4899 door to door
Michigan to Colorado Springs, to Winter Park CO, to West Yellowstone, to the black hills of SD, home.

488.4 gallons of fuel used, = 10.03mpg for complete trip.

worst tank, west through Iowa, bucking a 40+mph head wind, towing at 65, 6.1mpg

best tank, east out of West Yellowstone MT, 10-15mph tail wind, towing at 65, 14.7mpg.

don't remember what i get with the jeep on the 20tag. but i think its around 14 at 65mpg.
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Last edited by cyrus; September 4th, 2011 at 03:16 PM.
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