2011 Ford Super Duty Press Launch

Discussion in '4x4's, SUV's and P/U Trucks' started by xcel, Mar 4, 2010.

  1. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi All:

    ___Stopped in for a bite and may as well update. Have no idea what town I am in but the DPF regen reared up and bit hard just as I was driving through Amarillo. I had her aFCD up to 29.0 over ~ 55 miles when it struck. For the next 15-minutes, she sunk to just 24.5 mpg. She is back up to 27.2 as I sit but there is a rolling cloudbank over the last 100-miles and it is right into the front right corner at about 10 knots. I cannot see but 3 - 6 centrerline bars so DWL is more like driving by braile even though I have lost over 2,000' since this morning.

    ___I will take a nap and see if things immprove in an hour or two???

    ___Good Luck

    ___Wayne
     
  2. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi All:

    ___The 2011 Ford Super Duty adventure continues :)

    ___Drove until maybe 03:00 AM and made half way between OK City and Tulsa. Spent the night in the truck as there were few hotels on the Will Rogers Turnpike. I can say I have driven, hypermiled, worked and slept in my office away from home! And abused those poor Super Duty’s at the AZ Press Launch. And I was the most gentle ;)

    ___And the particulars… I did not have a top off when I left Gilbert, AZ two days ago as I just spent 30-minutes filling her in St Clair, MO.

    ___Weather was not in my favor as I left the TX/OK border with 10 to 15 mph direct side and right front corner winds really holding the truck back. It started to rain, then a cloud bank (I mentioned this already I think?) for over 350 miles. I pulled into a Station for the night as it began raining hard again.

    ___DPF Regens (“Cleaning Exhaust Filter” event) – Had one in Amarillo (29.0 mpg to 24.5 mpg over 14-miles at the 55 mile point), one about 30 miles from OK City (28.3 mpg to 27.2 mpg over 13-miles at the 254 mile point) and again about 20 miles from the OK/MO border (28.4 mpg to 27.9 mpg over ~ 13-miles at the 493 mile point). To have to work again and again to bring the aFCD back from the hit is really frustrating after a DPF Regen event.

    ___Tank #2: Fuel Low light appeared at 668 miles out, 55 DTE and 28.7 mpg vs. 652 miles out, 58 miles DTE and 30.1 mpg on tank 1. I must have screwed up that fill in Gilbert :(

    ___Trip A = 740.9 miles on 21.119 gallons of Diesel B and 5.5 gallons of B99 –- 740.9 miles/26.619 gallons = 27.8335 mpg. aFCD showed 29.2 so much closer this time… DTE was actually 13 miles beyond 0 DTE and there was still possible another 1.3 gallons left?

    ___Trip A/B stops at 999.9 miles. At least Trip B has been stuck there since blowing though that in OK somewhere but I have been using odo and trip A so no big deal but it would have been nice if the Trips went out to 5 or 10,000?

    ___Central, MO is a Hypermiling playground as there are 50 to 200’ deltas again and again and again… Yes, Basic and intermediate DWL, NICE-On’s and FAS’s for the long ones.

    ___After the hour and a half filling, eating, typing and tweeting, I am about to hit the road and believe I am about 65-miles from St. Louis? Will try and make it to Nathan’s home before to late but will probably be morning when we connect?

    ___Good Luck

    ___Wayne
     
  3. seftonm

    seftonm Veteran Staff Member

    Wow, that's a lot of regens, and they said they reduced the regen frequency. Can't imagine what it was before and how much that was killing mpg.
     
  4. npauli

    npauli Well-Known Member

    In the continual evolution of diesel technology & emissions requirements, I think the worst mpg penalty came in2007 with DPF's and active regeneration. It's probably worse for hypermilers and "light duty" use, since the engine doesn't generate enough heat to keep the filter clean. Those that are towing across country may never see a regen.

    I can imagine it's tough to figure out how to run the truck for best avg FE, when you only find out what the regen costs you a couple times per tank. You could try running faster all the time, or doing short burts of pedal pushing, but you won't really know if that helps keep the filter clean unless you do it for a long time. Maybe somebody can find a way to ask the truck how plugged the filter is, and monitor that in realtime with different techniques.
     
  5. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi All:

    ___Maybe my last post from the 2011 Ford Super Duty and its a Doozy!!!

    ___Arrived at Nathan's home early this morning at 31.7 mpg. He took an oil sample for analysis later and drove around his sub... I think he liked it??? Left his home at 30.3 mpg on the dash and headed into Chiicago.

    ___Arrived into Gurnee, IL. after 2 DPF Regens. First while leaving St. Louis. 34.2 mpg after 54 miles dropped to 28.1 mpg after 62 miles. That 34.2 was after the last fill and was the same 650' elevation when the Regen started! Second regen took place before Joliet, IL w/ the aFCD at 31.5 mpg and 368 miles out turning into 30.5 mpg and 380 miles out.

    ___Final Fill was the blowout ;-)

    ___450.9 miles on 13.954 gallons = 32.3133 mpg top off to top off w/ the aFCD @31.3 mpg.

    ___Good Luck

    ___Wayne
     
  6. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi All:

    ___I am sitting in the station for 15-minutes and will try and fill some more to make sure I do not screw up like I did on the first top off.

    ___Good Luck

    ___Wayne
     
  7. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi All:

    ___Pumped in another .752 gallons to the top of the filler neck so the final is now 450.9 miles/14.706 gallons = 30.6609 mpg.

    ___Not bad for a 390 HP 4WD Crew Cab capable of towing 14,600 + pounds and carrying gear for a family of four for a month or more ;)

    ___What a truck!!!

    ___Good Luck

    ___Wayne
     

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