Poor MPGs all of sudden? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 07-20-2014, 06:20 PM Thread Starter
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Poor MPGs all of sudden?

I have a 2013 F350 6.7 with about 18,000 miles on it. I just have a Ranch Hand bumper installed and now it seems I have lost about 3 MPG's! I'm thinking theres no way the bumper is causing and it must be somthing else - anyone see any decrease in MPG from a new bumper/grillgaurd? What coiuld be a cause of this drop all of a sudden?

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post #2 of 8 Old 07-20-2014, 06:24 PM
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I wouldn't be shocked if it were the bumper, increased weight and drag on an already un-aerodynamic brick.

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post #3 of 8 Old 07-20-2014, 07:10 PM
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I have to agree, I swapped out my stock tires for the same size Toyo M/T's which were 9 lbs heavier than stock and I took at least a 1-2 mpg hit. So it's probably not too far off. I guess having a sexy truck comes at a price!

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post #4 of 8 Old 07-21-2014, 12:00 AM
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Quote:
Originally Posted by jrshelton13 View Post
I have to agree, I swapped out my stock tires for the same size Toyo M/T's which were 9 lbs heavier than stock and I took at least a 1-2 mpg hit. So it's probably not too far off. I guess having a sexy truck comes at a price!

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I've also found that not only does the weight of the tire cause a reduction in mileage so does the rolling resistance. Typically the more aggressive the tread pattern the worse the mileage... I was just looking at the Goodyear site and the "Low rolling resistance" tread was a highway tread...
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post #5 of 8 Old 07-21-2014, 08:08 AM Thread Starter
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I have a hard time believing that a 300 pound bumper would do that! In the winter I put 350 pounds of sandbags in the bed for traction and don't notice any difference in mileage. Heck, when I tow my 3,500 pound boat, I drop about 3 mpg from my unloaded average, could the areos of the new bumper really have that kind of impact???

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post #6 of 8 Old 07-21-2014, 09:40 AM
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My ranch hand didn't kill my mileage but wheels and tires did quite a bit.


2012 F-250 Lariat Crew Cab Short Bed 4x4 FX4
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post #7 of 8 Old 07-21-2014, 12:04 PM Thread Starter
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Originally Posted by 79_bronco View Post
My ranch hand didn't kill my mileage but wheels and tires did quite a bit.
That would make - wheels and tires. Good to know your Ranch Hand didn't change your mileage...guess I need to take it in.

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post #8 of 8 Old 07-21-2014, 12:47 PM
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My tires weren't even significantly bigger, just Goodyear Duratrac 285/60r20 and some cheap Black Rhino Rockwell Wheels. Rockwell Off Road Wheels and Rockwell Off Road Rims for Trucks by Black Rhino


2012 F-250 Lariat Crew Cab Short Bed 4x4 FX4
Ranch Hand Front and Rear
30in Rigid E Series Light
Bilstein 5100 Series Shocks
Truck Cover USA American Work Cover with Toolbox
Kenwood DNX570HD Head Unit
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