6.4....What other numbers are there!
By Bruce W. on
2008 Ford F-350 Super Duty XL 4dr Crew Cab SB (5.4L 8cyl 6M)
I own a 08' Lariat dually crewcab one ton. I've owned sevral 3/4 tons (7.3's) in the past and yes they did get better mpg. 18 to 22 vs. 12.5 to 14. My truck has just turned 20k and is setup to pull (4.10 rears Vs. 3.73's). I knew what I was getting into, this truck is great, my wife loves to drive it. It's easy to turn and park. I had an aftermarket air filter on it. But after hearing too many scary stories about turbos being destroyed along with the engine, I went back to stock air box and filter. Mileage and HP have not been affected. So for sake of your $7500 engine and voiding any warranties don't mess with perfection. On a trip at 75 mph unloaded I averaged 11.6. Back (3.5 ton)11.8.
Horsepower, torque, ride quality. The eye catching looks. Load capacity (out classes Dodge and Chevy 1 tons).
Air vents in the back just like the 1/2 ton Lariats.