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This We'll Defend
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Discussion Starter #1
So I had to take the boy back to his mother's house after spending the summer here with me and Robin. Round trip up there and back was 671 miles, and we topped off in Crandal, with 17.4 gallons of #2 and then again in Lytle, at the tune of 18.7. Both times I was the Jack-wagon topping off, shaking the truck, and filling it all the way until nothing more could be place in.

Results of my hand calculations equals 18.58 MPG for the total trip up there and back. The lie-ometer calculated it as 19.7 which I knew would be incorrect.

Basically all the mods are the mild PantyDropper from TSD, S&B intake, and missing muffler and cat. Is this really good for a 6.0? What is a 6 leaker good for MPG wise?

I've liked this tune since Chris B wrote it for my wife's truck, but I never have driven it in a consevative manner. I didn't over excellerate, went 65-70 MPH as I-35 speed limits allowed, and just enjoyed the time with my boy.

Whole shpeel over... I'm impressed with the numbers, the tune and the truck.
 

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I had an all stock '06 F-250 King Ranch CC SB briefely and it would get about 21 mpg running 65. If you drove it aggressively though and favored 70 rather than 65 it would drop pretty quickly and get 18-20. Do you have stock size tires?
 

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This We'll Defend
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1,549 Posts
Discussion Starter #3 (Edited)
I don't really know what stock was originally for that truck. I believe that I have 305/70R18's right now, but it's my wife's daily driver so I don't pay much attention to the tire size, as much as I keep an eye on the inflation and tread depth. I don't like the idea of her pulling our horses with less than good tires, but I'll check and repost in a few minutes to see what size they are.

On edit: Wow I was way off. They are 275/70R18. They looked bigger than that to me but they're really small compared to the ones on my other truck.
 
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