I keep reading in here that most mpg figures are 9-10 city and 11-13 highway. My computer shows 8.6 - 8.8 constantly. I have the 4.30 l.s. axle with an auto transmision. I allso have bfg 285/75-16 all terrains. Could it be that I never had my speedo recalibrated or is something wrong with my truck. I tow nothing, I dont usually get into the pedal that much. What gives?
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02 F350 SD Lariat black , 4WD, SC, SWB, V10, auto., 4.30 LS, rf. clearance, snowplow prep, X springs, BFG 285/75-16, Tuff Country 2.5" levelling kit, Banks Stinger sytem, Banks Transcommand, Edelbrock IAS mono-tube shocks, Rancho s. stabilizer
I get 12/city,15/highway but I have 3.73's.Your speedometer probably could have something to do with the computer not reading correctly,have you checked it the old fashioned way?
I don't know where you live
but colder weather and winter gas will get you lower MPG
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2002 F250 XLT S/C 4x4 long bed
5.4,Auto w/4.10 LS in Dark Shadow Grey
Lariat rims w/285/75 BF Goodrich TA KO's
and Western 8' poly pro plow
Doesn't sound right. I have 1000 miles on my new V10 and I am getting about 11.5/12 in town and 14.5 on the highway. Not bad considering the engine isn't broken in yet!
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2002 F250 SD Crew Cab Lariat 4x4 with V10 engine - Arizona Beige with Black lower accent - Every option but the PTO provision - Line-X bedliner
I see you are from Mass. and the last time I knew, it gets cold there. I had a new 1999 F150 with the 4.2 v6 in it and with it new and cold out, I thought I made the biggest mistake of my life. Wasn't getting much better than you. Summer and 12k-13k miles changed all that. Got as high as 19 with it. If I would have kept it I know it would have gotten better. Summer time temps will treat you better. Find some x-way mile marker signs and check your speedo calibration. The 4:30 rear end is not known for the best mileage but it should get to what the others are. Remember, these new engines take a long time to break in. Better mileage can also be achieved by a good low weight synthetic engine oil.
Jim
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2001, F250 4x4, CC, Auto; Mobil 1 in transfer case&Trans.; Frantz Bypass Filter; "Hutch" fuel mods; Sonnax/Tricum mod; 4" Exhaust, 30" MagnaFlow; Attitude in A-Pillar and tranny gauge in Dash; AIS; EASE Diagnostics; Reese Slider Hitch; Fr Rotors, Cryo Treated&Slotted by ART.
I'm getting right around 9.6 on the overhead numbers with only 600 miles on the truck. And I do have 4.30 gears as long as I keep my foot out of it. Playing race truck driver I'm in the 8s. I'm running 1900-2000 rpms at 60mph
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2005 Excursion Limited 4X4 diesel and loaded
4" superlift, Nitto Terra Grapplers 315/75R16
First off, get the speedo recalibrated. Your reading low on miles because your tire size has increased diameter of about 1.5 inches. #2 - your tranny shift points may be off causing it to hang a little too long (unless the Banks stuff corrected that. #3 - I lost some mpg with the bigger tires, more rolling resistance. #4 - Did you ever check mpg before your mods? Is it possible that the Banks stuff is sucking a little mpg? #5 - From what I've read in the past, the 4.30s give up about 1-1.5 mpg to the 3.73s.
Just guessing.
Robb
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Robb Wing from Cincinnati,Ohio FOKISDCharter Member/Founding President
99.5 F250SD XLT,4X4,CC,SB,SRW,V10,Auto,3.73LS,ESOF,Deep Wedgewood Blue,Swiss Cab-high Cap,Pioneer DEH-P7300,Alpine Amps,Infinity Sub,Street Scene Grill Inserts,full-chrome grill,Fumoto,SPA Gauges,Rancho 9000s w/remote & stabilizer,Heated/Lighted TT mirrors, Jordan Ultima 2020,TYC Elegante Tail Lights,Great Covers Endura Seat Covers,Auto Lock Underseat Drawer,Hella Micro DE Fogs,Full Chrome Front Bumper,PML Diff Cover, JAD Solutions LED running lights below doors,18" Harley Wheels,keypad,chrome tow hooks,leather steering wheel, PF 2-piece Rotors and "Z" pads in front - PS Cryo and Hawk LTS in rear,BANKS Stinger Plus,Banks TransCommand,GMT Transmission My Pics
You have more of a reason to be getting 8.6 than I do!
I'm not sure when the "break in" period ends on these V-10's, Im learning as I go with this one!
I'm on my 5th fill up and here's what I've gotten so far:
7.05 MPG, 7.40 MPG, 8.55 MPG, 8.98 MPG, 8.77 MPG
I only have an XLT so those are all calculated the old fashioned way. For the most part the #'s have been going up. I have about 1250 miles or so on it now, hopefully it keeps getting better.
Its been an extra cold winter, so a lot of the problem is the warm up time its been getting every morning and night.
Next winter, I'll probobly be doing some minor engine / exhaust mods, but I'm not expecting the MPGS to go anywhere but down....thats what I've seen/heard for the most part.
BTW - I have a lead foot and I am currently doing 98% city driving.
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"Guido"
David M. Famiglietti
USAF, Ramstein AB, Germany
2002 F-250SD XLT SC 4x4 V-10(yeah, yeah, I know!) TRUCK PICS Guido's Equipment Pics
The WORST I've ever gotten was 8.8 with the loaded camper against a 40 mph head wind. What size right foot have you got??? Maybe you should take some lead out of it.
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Y2k F350, white with harvest gold trim,V10,4x4,Lariat,SC,Auto,Tow pkg,camper pkg,ESOF, so-called limited slip, off road,3.73,Rancho 9000 w/ in cab control, Ride Rite Air Bags,Long bed,Rickson 19.5" wheels, Michelin XDE-MS,Lance Camper, BugDeflector2, Stull Grill, KN., Flowmaster 50
I installed BFG 295 or 285/75/16's on my truck within the first 400 miles and never had the speedo recalibrated. I always got around 9.5-10 mpg according to the computer. I also do not let it sit and warm up at all during the winter, that will make a difference also.
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1999 F250 4x4 Supercab, V10, Lariat, 4.30ls 6 National Spring Lift, Dual Shocks, 16.5 x 9.75 Weld Typhoons, 36x14.50 TSL Radials, K&N Gen. II, Magnaflow Dual Exhaust, Billet Grill, Line-X My Truck
Rob, they're phasing out the last of the leaded gas out this year, or so they say.
Maybe there is something wrong with my engine? Probobly not. I'm going on a 2 hour trip to get my Rhino liner installed, I'll try to stay around 70 or so to see what I get, but I dought I will stay at 70 when cars will be zipping by me twice as fast! [img]/ubbthreads/images/icons/wink.gif[/img]
Too tempting!
Maybe its the crappy gas (mostly water) that AAFES buys over here.
Who know, but I do love my truck too much to worry about the bad gas milage.
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"Guido"
David M. Famiglietti
USAF, Ramstein AB, Germany
2002 F-250SD XLT SC 4x4 V-10(yeah, yeah, I know!) TRUCK PICS Guido's Equipment Pics
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