Compression Ignition Addict
Join Date: Dec 2008
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Truck weight kills the 08-10 Super Duty's. The 03-07 trucks were lighter, the motor was a little lighter, and the smaller displacement may provide better fuel mileage. The 6.7 gets good fuel mileage because of UREA, the trucks motor being lighter, and the truck itself being lighter.
I actually get really good fuel mileage in my truck. I try to keep my RPM's between 1800-2000 on the interstate and on my Proxes around town I get good fuel mileage. My truck probably weighs under 8,000 pounds with no spare and Toyo Proxes. Most 08-10 F-250's and SRW F-350's weigh 8200-8400 lbs. That is a killer in the fuel mileage department.
3.55 gears really help a lot of trucks also. Isn't that what you have in your 09 truck?
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2012 Ford F-250 Lariat CC/SB
Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights