6.4L Power Stroke Engine and DrivetrainDiscussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008 Super-Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.
What mpg are srw 350s getting? Mine is getting 7.8 to 8 mpg towing 4,500 pounds at 70 to 80 mph. Only 10 -12 unloaded . Thats bad Does any know if ford dropped navi, and in 2010 if they are coming out with the 6.7 like (DODGE) , and trash this pos guzzling engine? Dont know if this is true just a rumor anyone know anything different ? Also all most forgot ever regan my gas hand goes down quater which it does it every 100 miles . Oh ive only got 8 thousand miles on it is this the norm??
Towing 11K travel trailer, I got 7.5 against a 30+ headwind, but normally get around 9 under average wind conditions. Will know more in a few weeks when we go 1500 miles to Minnesota and back.
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2009 F350 4x4 C.C./L.B.- 6.4 Auto...lots of options, more on the way
I have a '09 F350 DRW, but I got a solid 10.x mpg carrying a 2,000# camper and towing a ~8,000 24' enclosed trailer some 3,400 miles at ~65 mph. Unloaded in mixed driving I'm getting in the 14-15 mpg range depending on the highway / city mix. This is the stock truck, no modifications, tuners, etc.
I have 08 350 SRW auto. Got 8.1 on 2K trip in Jan, got 8.2 on 2k trip back in April. Thus us pulling a 36' about 11K trailer. Get about 11.2-.5 pulling a 4K trailer on shorter 200+ mile trip. On highway no pull Best I have gotten is 15.4 keeping the boost below 1/2 trying to stay at least 1/4, using cruise it will drop to 13-13.5 I am very happy with everything, but the mileage compared to my 2002 is about 3-5 mpg less.
Tis the truth man. Your figures that is. Mine is the same. 8.5 to 10 towing enclosed trailer empty. 13.5 highway empty @71mph from Ma. to northern NH.
Fuel is rising back fast..up $ .50 within a month or so.
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08 F350 Lariet DK.Blue/Silver CC Short Box SRW. Auto transmission, Manual 4x4,Supplemental Cab Heater,3.73 Limited Slip.Gator Guard Bedliner, 6.5 x 12 Sno-Pro,8ft. Fisher.
04 Lance 820.
Here is my data copied from Excel. I have listed the highway driving and how much I was towing in the notes column. (Most all my driving is highway, with very very little city driving)
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2008 F350, Crew Cab, FX4, SRW,
job 3, Long Bed, and 18" factory steel wheels that feel like two tons of bricks -->Wonder if thats part of the poor mpg?
Here is my data copied from Excel. I have listed the highway driving and how much I was towing in the notes column. (Most all my driving is highway, with very very little city driving)
I see about the same, 13-13.5 empty. 9-10.5 pulling 6-8k. had the new flash back in january and saw the mpg drop to these numbers. was getting 14-15 empty. I drive the mountains of Colorado. When down in the flatlands I do get 1-1.5 mpg better. I'm not as unhappy as some, i came from a 96 powerstroke that got 15 empty.
i have a job3 f350, long bed, auto with 4x4 that is stock.
Last edited by wheatleycreek : 06-17-2009 at 06:06 PM.
Reason: add my truck info.
08 F-350 drw, 3.73 gears 14.4 empty, hand calc, 70mph, interstate. 9.4 towing 7000lb, 70mph, interstate. Oh yeah, only 2000 miles on truck. Old 260,000 mile 7.3 got 10 towing same trailer, 13.3 empty. But for the ride and quiet of the 08 I'd give up more mpg. Regens about once per tank. Seems like the harder it's run, the less it regens. Haven't had a flash or anything done yet.
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2000 XLT, 4x4, CC, DRW, long box, 7.3 PSD. 260,000 miles. 4" exhaust. CCV mod, 6637 filter. For Sale!
2008 XL, 4x2, CC, DRW, long box, 6.4, 3.73 gears. New 11-08. Plain Jane worker with rubber floor, cloth seats and stock for the next 7 years.
My mileage has increased quite a bit lately. I've been having some issues w/ the DPF. Dealer told me to start using the Ford Cetane Boost as well. While that has not rectified my black smoke/soot issue, the truck runs like a scalded dog and gets between 19 and 20 mpg at 70-75mph. Mixed city/highway I can't get her below 18. This is un-loaded - no trailer. Clearly I've got an issue w/ the DPF, but she's running good! Not sure if the cetane booster had anything to do with that or not - I started using that when this other issue arose. Just an FYI. The truck has 3.73's, 20" wheels, and 85K miles.
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2008 F-350 4wd Crew Cab Long Bed
6.4 Diesel w/ Torqshift
08 F-350 DRW Torqshift--5500 miles. On my last trip pulling 12K horse trailer--about 9-9.5. This was after a trip 14 day ago with the trailer loaded with one less horse and actually got 6.7 on one tank--averaged around 7-7.5. Talked to dealer--and salemen told me to try turning off tow/haul when at highway speed. He said when they got these trucks in Ford gave the salespeople very little sales help with MPG. So this dealership let a group of people pulling cattle stock trailers borrow the trucks if they drove them to their specifications and varying conditions and report back on mileage---and they saw this MPG boost when kicking off tow/haul at highway speeds. Don't know if this is legitimate--but it did seem to help on this trip, or truck is just breaking in more. So that's what mine is getting and FWIW.
I get 10 MPG pulling an 8500 lb 5er at at 65 MPH all day everyday. Of course there's more wind resistance to overcome than with a regular trailer.
I don't really drive the truck on the highway unloaded enough to see what kind of MPGs it gets. It does seem that it gets better mileage from the short trips I've done without the trailer going 65-70 as opposed to 60.
I've got a 3.73 LSD.
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Bill
2008 F350 FX4 CC PSD SB
Most everything but Nav & DVD
Line-X bedliner
BakFlip tonneau cover
Reese 5th wheel hitch
New 08 350 SRW On trip to Colo got 8.1 to 8.5 pulling a 7000 Toy hauler trailer. Mileage same in Colo mountain 11,000 ft elevation or 400 ft elevation in home state of Texas. Love the truck except for the mileage?? Excursion with PSD got 14-16 pulling same trailer (Not as good thought)
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2008 F350 Crew Cab 6.4 4X4 Lariat with all the goodies Towing 22' Toy HaulerTravel Trailer
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