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A question that begs to be asked is did you change your truck with forscan or at the dealer to account for the different gears or tire size? And the post that you replied to was comparing factory options, not re-geared trucks with larger tires. In the pursuit of fairness, that has to be considered.
Yes, used dealer software from my work to reprogram the computer. The speedo was actually 5% slow vs gps. So 3 mph at 60. The effective gearing with the 4.88's and 37 is extremely close to a factory truck with 4.30 gears and the smallest oem tire choice, which is what my dads truck was ordered with. I think it speaks volumes that a wheel and tire combo that weighted right at 100lbs each maintained that mpg with the appropriate gearing.
19mpg on average, according to the ScanGauge. That's for my 2013 F-350 dually longbed crewcab, unloaded. On some trips I average 20mpg and on others I struggle to beat 18mpg, so 19 average. That's keeping the vehicle in Drive, accelerating quickly up to about 15mph and then accelerating very slowly up to about 40mph (over the course of 3 to 5 minutes). I rarely exceed 45mph, and usually keep it under 40mph. Some dirt roads and gentle hills, but mostly I've been traveling flat paved country roads.
2014 F350 SRW CCLB with a flatbed, 4.56 gears and 33 BFG KM3's, I average 10-11 around town, my truck often has a trailer behind it from 2500 - 7000lbs so I am normally around that 9-10 mpg.. Best I ever got was 55mph over 260 miles with 3.73 and 31's I got 14.9, never seen better in these big gas trucks.
2019 F350 CCLB 4x4 3:73, best I’ve gotten is 19 unloaded, relatively flat driving @ 65 mph. Kick it up to 75 and the best I get is 14.5-15. With the truck camper loaded ready to camp, I get 10. All in all I’m fine with those numbers. Winter time, with warm up and in town trips, looking at 10 there as well.
2015 F250 regular cab, 4x4, 3.73, 265/70R17.
15.2 mpg (unloaded 60mph highway)
11-12 mpg avg
No towing yet with this truck
2022 F250 regular cab, 4x4, 3.73, 245/75R17.
17.8 mpg (unloaded 60mph highway drive home from dealership)
14.7 mpg avg as of last use, but still dropping with each use. (always towing, stays hooked to 4,500lbs trailer)
2022 F350 regular cab, 4x4, 3.73, 245/75R17.
18.1 mpg (unloaded 60mph highway drive home from dealership)
10.3 mpg avg (always towing, stays hooked to 16,000lb trailer)
2022 F350 super cab, 4x4, 3.73, 245/75R17.
17.6 mpg (unloaded 60mph highway drive home from dealership)
9.6 mpg avg (always towing, stays hooked to 16,000lb trailer)
Question.. What is MPG in summer with AC on?? and what kind of TT you pulling? is the rear the elec locking type? do you feel with that you dont need 4x4 so much.. looking at making the change and have 2wd now but with open rear.. it slips on an ice cube!!
Originally Posted by Smiggles1970
2018 F-250 2WD
Consistently gets ~17 mpg with no A/C in the winter
95% highway miles at 75 - 80 mph here in South Florida
I get about 16 mpg in the summer at the same speeds. The sweet spot for my truck is about 68 mph, which gets about 19 mpg with no A/C,
My TT is a 35' Bullet Premier. It weighs close to 8K loaded for a trip. A trailer of that weight pulled by a F-250 with a Hensley hitch in FL is amazing.
My truck is 2WD, as in no transfer case or front differential. Not being 4WD and having the lower stance contributes to the decent mileage. I would never own a 2WD truck without a locking rear. I rarely use it, but when I have, it has come in handy.
Sadly the 24 XLT's and up no longer offer 2WD. I hope that decision is temporary, because it may cause me to jump brands.
Cool deal.. that's not bad MPG not towing.. hows is it when pulling the RV?? and what speed you find best,, still 68 or so??.. I pull a 30 ft airstream that weigh in around 8300 lbs with a 03, 7.3L diesel and average around 12 mpg.. usually running 60-65 depending on wind direction.. down wind 65-70,, up wind 55-60.. pulled out west with 6 mile 5-6% grades... non towing it bounces around 16-16.5.. again running 65 to 70 depending on wind and posted speed limit.
Originally Posted by Smiggles1970
I get about 16 mpg in the summer at the same speeds. The sweet spot for my truck is about 68 mph, which gets about 19 mpg with no A/C,
My TT is a 35' Bullet Premier. It weighs close to 8K loaded for a trip. A trailer of that weight pulled by a F-250 with a Hensley hitch in FL is amazing.
My truck is 2WD, as in no transfer case or front differential. Not being 4WD and having the lower stance contributes to the decent mileage. I would never own a 2WD truck without a locking rear. I rarely use it, but when I have, it has come in handy.
Sadly the 24 XLT's and up no longer offer 2WD. I hope that decision is temporary, because it may cause me to jump brands.
Fantastic setup you have there...very impressive towing and non-towing numbers! The BEST of the BEST!
My sweet spot for towing is 5th gear (~2200 rpm) at 62mph. With no headwind, I typically pull 9 mpg. Running A/C when towing does not appear to affect mileage.
I picked up a 2017 F-250 last year with 80000 miles on it. I've put 5000 miles on it so far. In my area, there's been some pretty drastic price differences between gas and E85 over the past year, so I've swapped back and forth a couple times.
Looking at some of you guys getting 15+ mpg makes me jealous.
@volk250r, that seems pretty low. Being a 2017, your truck would have the 6R100 "lighter duty" transmission which actually shifts more smoothly, weighs less, and gets better fuel economy vs the 6R140 in the 350 or diesels. Are the tires the stock size? Are they overly aggressive? I had two 6.2L Super Duty trucks - a 2012 F-250 crew 4x4 short bed and a 2015 F-350 crew 4x4 short bed, both with 3.73 axle ratios and of course the 6R140 transmission. They had the stock 275x70x18 tires. I could get 16mpg on a 55 mph two-lane highway as my best; 14mpg on the 70 mph interstate divided highway, and about 10mpg in the city. Towing was miserable economy no matter what, and city driving could often end up in the single digits.
I bought a new 2022 RAM 2500 crew 4x4 short bed last spring with the 6.4L Hemi and 8-speed auto for comparison. Lifetime average (with about 10k miles on it) is 11mpg, and at least half of that is towing an 8k enclosed trailer. 55mph highway gets nearly 18mpg, 70mph interstate gets 15, city is 10mpg, towing with the 8k trailer is 9-10mpg. The truck does have cylinder deactivation but anytime Tow/Haul is on, that feature is switched off.
@volk250r, that seems pretty low. Being a 2017, your truck would have the 6R100 "lighter duty" transmission which actually shifts more smoothly, weighs less, and gets better fuel economy vs the 6R140 in the 350 or diesels. Are the tires the stock size? Are they overly aggressive? I had two 6.2L Super Duty trucks - a 2012 F-250 crew 4x4 short bed and a 2015 F-350 crew 4x4 short bed, both with 3.73 axle ratios and of course the 6R140 transmission. They had the stock 275x70x18 tires. I could get 16mpg on a 55 mph two-lane highway as my best; 14mpg on the 70 mph interstate divided highway, and about 10mpg in the city. Towing was miserable economy no matter what, and city driving could often end up in the single digits.
I bought a new 2022 RAM 2500 crew 4x4 short bed last spring with the 6.4L Hemi and 8-speed auto for comparison. Lifetime average (with about 10k miles on it) is 11mpg, and at least half of that is towing an 8k enclosed trailer. 55mph highway gets nearly 18mpg, 70mph interstate gets 15, city is 10mpg, towing with the 8k trailer is 9-10mpg. The truck does have cylinder deactivation but anytime Tow/Haul is on, that feature is switched off.
I agree with it being low. On the highway, I generally drive 60-70. According to the door jam, the stock tires on this truck were 275/65/18. I'm running 275/70/18, so they are about 1 inch bigger than stock. They are Yokohama Geolander M/Ts, which is pretty aggressive tread. I wouldn't expect them to cause mpg to drop too much. Maybe I'm wrong?
I agree with it being low. On the highway, I generally drive 60-70. According to the door jam, the stock tires on this truck were 275/65/18. I'm running 275/70/18, so they are about 1 inch bigger than stock. They are Yokohama Geolander M/Ts, which is pretty aggressive tread. I wouldn't expect them to cause mpg to drop too much. Maybe I'm wrong?
275/65 is the base option, the 70 series with the taller sidewall was an option. I actually think the 70 series helps fuel economy by effectively making the axle ratio taller. However, the added height hurts fuel economy.
Running the M/T tires will absolutely reduce your fuel economy, especially on the highway - I'd expect at least 2mpg less than with regular all season or even an all-terrain tire.
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