Fuel Economy at 75 MPH? 12.5 mpg?

[CCahill]

This is interesting!
I just got back from a 1700 mile trip from Sierra Nevada foothills, to Ensenada, Mexico.

Two drivers : Me, I kept the cruise @ 69 MPH... My Lady friend, love her dearly, drove the truck from between, 60-85MPH
.

The mileage average was 18. 6, **** good for a 7400# truck, with EZ/BDII's/missing waistegate/DTT's goodies.

Colin



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2001 Quad,4x4,AT,4. 10LS,LB,Loaded enough,stock,mostly... . 65 Chevelle sedan, Hella nice driver, 53 Nash Rambler Convt,1 of 653 built,[not a Metro], GM drivetrain, injection, and auto/od
Specialized FSR PRO Stumpjumper,Cannondale F2000, Loaded
MTD Lawn tractor with flames
12' fishin' boat, loaded. .

 

[BigMike]

Pulling 11K 5er. Lots of hills. Maintained 65-70mph. 10mpg!!! I'm gonna slow down a little the next time and see if it makes a difference. One thing I do know, the V10 gas doesn't get 10mpg empty!

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1999, 2500,4X4,QC,5spd, KN Filter,VA Box,4" Exhaust, Piller Mount Pyro & Boost Guages, BD Exhaust Brake, Bugshield w/eyebrows. Bedliner, Diamond Plated Rail Protectors, Better Built tool box, Rear Flaps.
Pull a 2000 30. 5' Terry Manor 5er.

 

[X-10]

Mike, don't know if you were talking highway mileage or not, but my 96 v-10 got consistent 10's not including adjustment for 285's which should make it 11? Nothing to brag about, just what I always got.

Any of you others that are getting the 19-20 mpg start out as low as some of the rest of us? Thanks, Doug

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01. 5 QC 2500 4x4 SLT HO 6-speed 3. 54's, flame red, E-brake, Bushwacker flares, Raven topper, Arma spray on, 285 BF AT's, & Westin CPS bars.

 

[anthony4]

On the freeway cruise lock on @ 70 I get 24+ Miles to the gallon. jamming thru town I get between 15-18 miles to the gallon. Towing a 35ft 5er 10000# depending on wind, road grade etc I get between 10-14 miles to the gallon. Hope this info helps you.



2001 2500HD Quad Cab SLT LWB, 4x4, Cummins, 3. 54 gears,
Deep Garnet Red, Agate, 4w ABS, tinted windows,
Camper and Trailer tow packages with trailer towing mirrors,
HD transfer case, snow plow prep, cab lights, travel conv group,
mopar nurf bars, Downey SST cover, Bed liner with fifth wheel hitch
Power driver seat with power lumbar,
loaded loaded loaded!!!!!!!

 

[SmokinJoe]

Originally posted by anthony4:
On the freeway cruise lock on @ 70 I get 24+ Miles to the gallon.

What tires do you have, they can make a differnce.


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2001. 5 QC 2500 White Sport 4x4 LWB ETC 5-Speed Anti-Spin 3. 54 Trailer Tow 241HD SLT+ Tan Leather(Mad Cow Disease) LT265/75R16E

 

[Fred Swanson]

Mine has stayed very consistent since day one. Always between 16-17. I have on occasion had it up to 20, unloaded driving the speed limit. Towing my 16 ft car hauler with one 2500 lb buggy I get around 15. With my 24 ft gooseneck and 2 buggies(10,000 lb total) with the wind I get 13-15, and against the wind I get around 11-13. This is with an average speed of 65. Lots of grades, too. Climbing from 1000 ft to 7000 ft, and up and down a few times in between. Get an EZ, it does improve mileage.


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Fred Swanson
Co-Owner
Canyon State Components, LLC
www.canyonstatecomponents.com

'00 QC,SB,4x4,Auto,3. 54 w/LSD,Trailer Package,Tow Package,DTT's
TC(91%)(80psi),DD2's,EZ,HOT PE,K RE-0880,Cummins RED Valve Cover

[This message has been edited by cscpusher (edited 04-30-2001). ]

 

[Deezul1]

For better mileage remove half of your valves,all those extra valves just stir up the fuel so much it doesnt know what to do.

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96 SLT Laramie CC 5spd, 3. 54, no muff, no cat, 5"turn down tip. (its for sale)
. Member NRA/USPSA

 

[FD5]

Don't know about the 24 valve but my 12 fuel mileage depends on how heavy my right foot is. My mileage results towing a 20' Holiday Rambler (5,900 lbs. )
Cruise set at
75 I get 13. 8 mpg
70 I get 14. 1 mpg
65 I get 17. 1 mpg, and I arrive about 9 minutes later than at 75 mph for every 75 miles.
I haven't tried at 60, might get run over by the 18 wheelers.
Think I'll stick to 65.

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1995 2500, SLT Laramie, Xcab, auto, 3. 54, stock plate forward, 239K, Amsoiled throughout, dual by-pass filter, muffler and cat fell off, if you find them, there yours!!
1989 250, Cummins, auto, stock, work truck, 190K, soon to be Amsoiled
1967 Coronet 440, Steve Thomas built 360, auto, 2. 94, factory A/C, am radio, FAST!!!and is FOR SALE $5,500
1987 Celica GT convertible, auto, 67K
1989 Holiday Rambler Aluma-lite travel trailer
Amsoil Dealer

[This message has been edited by FD5 (edited 05-01-2001). ]

 

[Diese1nut]

My GCWR is 19,200 and at 75mph depending on head wind I get between 10. 8 and 11. 8. If i drop down just under 70mph it goes up to between 12. 9 and 14. 75. If I am under 65mph I get between 14. 75 and 15. 75.
With out the trailer the highest I have seen is 17. 5. Truck weighs 9100 alone.
I have the VA and PS boost mod. Highest egt's on a long pull at 65 in 5'th were 1000 post turbo,(very briefly) usually at 950 on long pulls.


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2001,QC. SWB,SLT+,HO,6spd,4x4,,3. 54. White w/agate leather.
Oem molded steps,Jacobs E Brake,Espar,Quad Headlights w/guards,Century Royal cap,Manik grill guard, class V hitch, Hide-n-side custom bed. EGT and Boost guages on A pillar.

2000 Holiday Rambler 28'aluma-lite,TT, w/slide.