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Old 08-10-2017, 09:26 PM
RJC2 RJC2 is online now
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2017+ Fuel Economy

I was wondering what kind of fuel economy others are seeing with their Super Duties. It probably wouldn't hurt to list if your truck is a dually or single rear wheel and gear ratios.
I haven't towed with mine yet (still using the old 7.3 for that) and am seeing an average of 17.4 mpg (hand calculated) with 4500 miles on the odometer. This is country driving with 3.55 gears and a crew cab short bed.
I did make one long run out to Amish Country to pick up some furniture and got a hair over 19 mpg. I was running 70-80 mph the whole way.
Surprisingly, the Amish guys really loved the truck. It was kind of humbling as they ride bicycles to work.
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Old 08-10-2017, 09:34 PM
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I have 4x4 CCSB single wheel with 3:31 locker and I am averaging 17.4 mpg. I only have 440 miles (2 weeks) on mine so far, and of course no towing yet.
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Old 08-10-2017, 09:36 PM
adaman1 adaman1 is offline
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Getting 15.5 - 16 using actual miles/gals with mixed driving. Have towed but not long enough to do a calculation. 3.55 - 20 in wheels, See sig block for rest of truck details
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Old 08-10-2017, 09:39 PM
Ryan Bush Ryan Bush is offline
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CCSB SRW 3.55 4x4

Drive home from dealer was 65 miles = 18.5 at 75mph, down hill (.5-1mpg better than my 16)

200 miles mixed driving first week = 15.9, about 1.5 mpg better than my 16 with the same driving.
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Old 08-10-2017, 09:41 PM
wfedwar wfedwar is offline
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Average of 17.0-17.5. CCSB, 6.7, 3.55, 20 in, 4wd, 8k miles. Has been the same since the first tank.
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Old 08-10-2017, 10:07 PM
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Quote:
Originally Posted by Super Duty STX View Post
I have 4x4 CCSB single wheel with 3:31 locker and I am averaging 17.4 mpg. I only have 440 miles (2 weeks) on mine so far, and of course no towing yet.
Same here to start now at 16K I see just over 20
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Old 08-10-2017, 10:09 PM
RJC2 RJC2 is online now
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Originally Posted by Uzumati View Post
Same here to start now at 16K I see just over 20
Are you saying that your mileage got better? If so, at what mileage did you notice it?


My previous 2014 F250 6.7 increased about 1 mpg at around 10,000 miles.
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Old 08-10-2017, 10:35 PM
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SRW 4x4 35's with 3.55
15.6 mpg's mix of city and hwy.
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Old 08-10-2017, 11:32 PM
ByronCR ByronCR is offline
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F350 Lariat Ultimate SRW CCLB FX4 3.55 with 20's. 6500 miles
In the city I am getting around 14 to 14.5, on the highway I am getting around 18.5 to 19.5. When towing my 35ft fifth wheel (13,000 lbs) I am getting around 10 (unfortunately in the Pacific NW nothing is flat, all up and down hills)
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Old 08-10-2017, 11:38 PM
FmaxTurboSi FmaxTurboSi is offline
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19mpg at 65-70 mph highway, 14.5mpg at 80mph.

14.5mpg mixed highway and city driving.

3.55 gears, rest of info is in my sig.
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Old 08-11-2017, 12:21 AM
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BS on some of that above...What is this...the 2 wheel drive section??....lol. Seriously. The truest one is FmaxTurboSi. Pretty much nailed it.
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Old 08-11-2017, 05:32 AM
tpalmer007 tpalmer007 is online now
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Quote:
Originally Posted by Kenv View Post
BS on some of that above...What is this...the 2 wheel drive section??....lol. Seriously. The truest one is FmaxTurboSi. Pretty much nailed it.
I agree. Just got back from a 2,000 mile round trip from NY to SC and back. Trip meter ahows 15.4 mpg over the whole trip. 80 mph average the whole way.
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Old 08-11-2017, 06:35 AM
Seastacker Seastacker is online now
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6.7 f350 short bed, 3:55 gears. I am getting 17.5 ish mostly back 55mph roads. Can get 19 plus on the freeway if I keep it to 70. Falls off fast after that. This has been consistent over my last 3 fill ups as calculated by the fuelly app.
Getting around 10-11 towing our 10k bumper pull toy hauler. I was a bit surprised at this since it's not super heavy. I tow at 62-65 mph max. Looking at it though, it is pretty tall and wide. I must be more of a wind resistance issue.
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Old 08-11-2017, 06:51 AM
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Originally Posted by Kenv View Post
BS on some of that above...What is this...the 2 wheel drive section??....lol. Seriously. The truest one is FmaxTurboSi. Pretty much nailed it.
I assure you Ken, my numbers are all hand calculated. 90% of the fill ups are done at the same pump, topping it off each time for accuracy, and my truck is a 4X4.
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Old 08-11-2017, 06:51 AM
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Mine is all good at 17-19.5 mpg and then one day, poof! A Regen tax takes some away.
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