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Old 08-27-2016, 02:12 PM   #1
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Fuel efficiency question.

I just purchased a 2016 F-250 with 6.2 liter gas engine. We just returned from a 6 week 6,000 mile jaunt through 9 western states with a 28 foot Starcraft Launch Ultra Lite bumper pull. The truck performed decently well--I guess as we are first timers on the road-- but when climbing hills it went to 3rd gear--in a 6 gear auto transmission-- pretty quick and stayed there until we reached the summit of the hill. I am not happy with what I think is a lack of power. We averaged about 8.5 mph on the trip. Is this typical for this type of truck? How much better off would I be with a diesel truck?
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Old 08-27-2016, 03:10 PM   #2
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Hi welcome to the forum.

What you're describing does sound very reasonable for your design and optioned truck.
As you will probably get many testimonies from various users there are reams of data on this topic.
Gasoline engines generally rely on higher RPMs to develop their rated HP & torque levels.
Diesels by inherit of their high compression ratios and other factors tend to develop more usable torque at lower RPMs making them somewhat more suitable for heavy towing.
Whether a diesel's initial cost and often elevated maintenance costs fit your lifestyle, only you can decide.
Fuel consumption will be in a similar range, most haulers report approx. 10 MPG towing.
Diesel fuel contains more BTU's per gallon though.

Be well.
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Old 08-27-2016, 06:48 PM   #3
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That sounds like the same experience I had with my Chevy 2500 6.0 except I was around 7.5mpg. High RPM and low MPG. Just the nature of the beast with gas. Not a bad thing. Just how it is.
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Old 08-27-2016, 08:52 PM   #4
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A new 2500 Ram with a 6.7 Cummins will get better mileage pulling and go up hills faster, in a higher gear than your F-250.
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Old 08-27-2016, 11:08 PM   #5
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I have a 2016 Ram 2500 and pull a 25 ft Arctic Fox that weighs 6,500 lbs loaded. This summer I did a five week, 6,400 mile trip and adveraged 14 mpg towing. I stayed at 63-65 mph. In Colorado I typically see 11-12 mpg. The truck is a beast climbing these 12,000 ft summits and I'm relaxed descending those 6 % grades with the exhaust brake. I never need to touch the brakes and I love the truck.

Empty I see 22 mpg here in Colorado. I have the 3.42 rear gears.
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Old 08-28-2016, 06:36 AM   #6
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Since you titled this thread "fuel efficiency question" I assume that is the major concern. My answer would be to just slow down a bit and develop driving habits that minimize the use of both the gas and brake pedal. Yes, scrubbing off forward speed with the brakes is wasting energy you just paid for.
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Old 08-28-2016, 12:34 PM   #7
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As previously stated, gassers require higher RPMs in a lower gear. No biggie, that's how they are designed. Your 6.2L will have ZERO problems pulling that size trailer.

If the noise of the engine bothers you, turn up the radio
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Old 08-29-2016, 09:15 AM   #8
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Quote:
Originally Posted by MtnTrek View Post
Diesel fuel contains more BTU's per gallon though.
Not a good enough reason to get a diesel if you don't want one for whatever reason.

Look! I have a chart!
http://www.afdc.energy.gov/fuels/fue...ison_chart.pdf
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Old 08-30-2016, 04:44 PM   #9
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the 6.2L engine has the "fly-by-wire" and has a feeling of lacking... till Full throttle .... many like the reprogrammer to wake up the 6.2L at part throttle.
search the Ford truck forum for brands.

my 6.2L has 145,000 miles and averages 9mpg pulling 9,000 plus trailer... and 2,000 in the truck bed...for a total rolling weight of 17,000 pounds.

and anything over 60 mph will kill any gas mileage.. regardless the size of trailer.
aerodynamics are against you/us.
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Old 08-31-2016, 07:21 PM   #10
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I average 11 mpg on flat ground with my z71 pulling the 6500 lb vibe at around 65 mph. It will downshift on hills or bridges to keep speeds up but that's normal for a gas engine.
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Old 08-31-2016, 07:49 PM   #11
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To the OP, you saved $9,000 by not getting a diesel along with lower costs for normal service. Just slow down and enjoy the drive. The guys in the diesels that blow right past you paid for that ability. No grade I can't pull at 60+ MPH. I get about 12MPG with my setup and would get about 9 had I got the 6.4 hemi that would have pulled my TT just fine but slower on the grades. I paid an extra $8500 for the diesel. My oil change is 12 qts and I have 2 fuel filters that cost $65 each every year if I change them myself. Your results sound correct for your setup. BTW, welcome to the forum.
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Old 08-31-2016, 11:53 PM   #12
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To the OP, you saved $9,000 by not getting a diesel along with lower costs for normal service. Just slow down and enjoy the drive. The guys in the diesels that blow right past you paid for that ability. No grade I can't pull at 60+ MPH. I get about 12MPG with my setup and would get about 9 had I got the 6.4 hemi that would have pulled my TT just fine but slower on the grades. I paid an extra $8500 for the diesel. My oil change is 12 qts and I have 2 fuel filters that cost $65 each every year if I change them myself. Your results sound correct for your setup. BTW, welcome to the forum.
I totally agree. BTW, Amazon has both Mopar fuel filters for under $82. I just bought me a couple sets. Also, I run Rotella T6 and O'Rileys has that on sale now for $19 a gallon plus a $5 mail in rebate up to four gallons. Gotta stock up when it's on sale.
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Old 09-01-2016, 08:46 AM   #13
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When towing anything in my weight range a diesel does cost more,,,,,,, but it's worth it.
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Old 09-01-2016, 10:10 AM   #14
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My 2014 Ram 3500 DRW cummins does 11.5 - 12.5 MPG pulling my 40' 5er. Thus far mileage average hasn't changed pulling it across flat Illinois or thru the hills of TN.

Pull, on flat ground, in 6th gear at 1650 RPM at 70 MPH. In the mountains I left her in 5th.. never shifted below that and held 70... around 2200 RPM.
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