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Old 12-16-2010, 09:02 AM
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Fuel Mileage

Hey guys i am new on here. I currently have an 03 6.0 with 95,000 miles on it and i am sick of putting money into it. I am pleased with the mileage on my 6.0, i am getting around 17 for daily driving and about 12 hauling my trailer. I am interested in getting a 6.4 because i am a ford guy and one that cant afford the 6.7. But i have heard bad things about the fuel mileage in the 6.4 so that is why i am asking you guys to let me know how yours are doing. Also please specify why type of driving you are doing, as in daily driving or hauling.

Thanks
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Old 12-31-2010, 07:09 AM
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Hi, My truck is a 2009 CCSB 250 4X4 3:73. I've kept a notebook of every fill up. My driving is 98% city I average 10.2 to 10.8 MPG on every tank. On the hwy I get 16.5 running 70 MPH at 75 to 80 I get 14.5MPG. I've bought a H&S Mini max tuner that I haven't put on yet so I'm hoping for better mileage with the DPF deleted. I have 17000 miles on my truck. It sounds bad but it's worth it for the rest of the truck!
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Old 12-31-2010, 03:35 PM
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I just drove my 2010 F250 6.4L, EGR Delete, DPF Delete, Spartan Diesel Tech +210 HP mod, right at 600 HP now, 1,100 ft. lbs. torque, stock Continental 32.5" road tires, to Dallas, TX and back, total of approx. 1,400 miles, nearly all interstate. Runs great, sounds great, got 21.73 mpg at 66 mph turning 1,700 rpm for 294 Sm. Personal record on the fuel mileage for this truck. Not surprising, pushing it up to 80-85 mph, turns a little more than 2,000 rpm, fuel mileage drops about 25% to only 16.1 mpg. I guess that's what happens to brick walls hitting too much wind. At 70 mph, I get right at 20.0 mpg, all of this hand-calculated at the gas station pump, of course.
All these figures are empty truck, no towing.
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Old 12-31-2010, 03:44 PM
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JJ Pyle,

I'll add, removing the DPF (which, when viewed from the front or rear of the ~85-lb. massive device presents a BLOCKAGE to exhaust air) alone transformed my 6.4L Powerstroke. I put in a 4-inch stainless straight exhaust pipe. The rush of air coming out of the truck, the enormous ease with which it now accelerates, the fact that removing the DPF alone, as a single act, will increase fuel mileage, in town and on the hwy, by 3 mpg, all add up to have produced an unleashed engine. [emphasis added] Words do not suffice.
I also added a Tial blow-off valve and Elite Diesel wastegaste valve on both sides of the turbos to protect against boost surges, and had an Elite Diesel EGR Delete package put on (which really quitened down the engine since that valve no longer cycles - which makes a loud roar on the highway when the valve cycles). Long story short, I now have an engine that should exceed 1.0 million miles with obvious engine accessories failing before then (fuel pumps, oil pump, alternator, etc.), with no liability of worrying about fuel ending up in my engine oil system due to b.s. EPA mandated emissions components, and better fuel mileage b/c I'm not dumping raw fuel into the tailpipe/DPF. -- C. Smock
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