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.
My service truck will be at 18000 Lbs day in day out. Has anyone beem pulling a load enough to know what the mileage will be at that weight? My '01 F-450 usually gets between 7 and 8 MPG. I do a lot of city driving and a few long hauls a month ( If you can call stop and go on the SO Cal freeways Long Haul).
Al
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08 F550 11' Service bed w/ crane,201" WB, welder, air compressor & lots of tools weighing in at #18,250
'01 F-450 Has been cleaned and is waiting for a buyer
In that much traffic, I'm not sure the 4.88 will hurt you too much. Try not to gun it through intersections, and I bet you'd get 7 'round town. Probably won't see much more than that on the highway, though.
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Feb 03 6.0 Silver F-250 SD SC XLT long box, 6-spd 3.73ls, Fx4, Stock, Spray-in liner, Contico box.HARPOONED.
Your going to get about 6.5 around town and about 7.5 on the highway. I routinely pull anywhere from 14,000 to 24,000 with my F450 with the 4.88 gears. The real killer on the mileage is having to come to a complete stop multiple times and then getting all the weight moving again.
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2008 King Ranch F450 - 4.30 Gears
2008 XT F550 - 4.88 Gears
2006 Caterpillar 420D Backhoe
1957 Wife - Not a diesel burner, but sometimes does a Regen
I pull 20k most of the time. I have the 4.88's and get 8-9 mostly hwy but some city mixed in. The killer is keeping it at 65-70mph on the hwy and not letting it run. high RPM's kill the mpg.
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08 F450 4x4 CC KR
06 F250 4x4 CC KR V-10 lots of goodies.
If I can get 8-9 pulling 20 I will be happy. Spent close to a grand on fuel in last three days, mostly at 6 mpg. My new 550 is getting built in 10 days and I am getting excited to sit in a seat that is not so dang worn out.
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