6.0 best fuel mileage - Page 10 - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #91 of 102 (permalink) Old 07-28-2016, 12:22 PM
2006 Ford F350 King Ranch
 
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Re: 6.0 best fuel mileage

before i through the 33s on my truck i was getting any where from 18-25 mpg. i actually was getting good mileage. i would fill the tank up full and have about 605 miles until empty now with the tires i get around 16-18mpg. im assuming upgrading my injectors and fuel pump will restore some of that. since the fuel will be more consistent. Nice truck btw mine looks damn similar to yours.

06 F350 Kingranch
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33" on 20s
Stock for now
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post #92 of 102 (permalink) Old 03-04-2017, 05:47 PM
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Re: 6.0 best fuel mileage

Recently bought a 2006 F250 Lariat, 2x4, studded, EGR-delete, 4" exhaust, Air Raid intake, 115k miles.

Started with the first tank at just a hair under 16 mpg, running 75 mph on the highway. After changing oil, oil filter, and fuel filters have has seen it drop down to mid-13s... :/

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post #93 of 102 (permalink) Old 03-09-2017, 03:22 PM
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Re: 6.0 best fuel mileage

Read the stickies.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #94 of 102 (permalink) Old 03-09-2017, 03:24 PM
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Re: 6.0 best fuel mileage

Quote:
Originally Posted by scrombi8 View Post
... im assuming upgrading my injectors and fuel pump will restore some of that. since the fuel will be more consistent. ...
No it won't. The tires are killing you.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #95 of 102 (permalink) Old 08-03-2019, 08:32 PM
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Re: 6.0 best fuel mileage

The best I have gotten is 18mpg but thatís an imperial gallon, 4.54 imp vs 3.83 us, which works out to be 15 mpg us
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post #96 of 102 (permalink) Old 08-16-2019, 06:49 PM
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Re: 6.0 best fuel mileage

2005 f 350 6.0 king cab 6'8" bed.....16 to 17 very consistent....best at about 2000 rpm....about 65 mph
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post #97 of 102 (permalink) Old 10-07-2019, 02:51 PM
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Re: 6.0 best fuel mileage

2005 Lariat Crew short bed, stock with STC canned tune, blue spring, 305/65R18 BFG Discovery, made 4 trips from Southern Michigan (Jackson) to the Upper Peninsula (Marquette), about 450 miles each way. Each trip on a single tank of fuel most of the way at 78mph using cruise, with real world calculations averaged 16.5.

First time driving up I took my time, drove manually(no cruise) just at or below speed limits, no stops at all, between 70 and 75mph, averaged 17.5mpg real world calculation.

I did use the dash calculator as well, and over all for the whole trip it averaged out the same or pretty close. But with that I could see what speeds really negatively affected the averages. The truck really seems to like 65 to 70 mph better than 75 to 80... From about mid Michigan to the south the speed limit is 65 and 70mph. You get above St. John's, and it's pretty much 75mph all the way past the bridge then 65 and 70 again on the smaller highways past St Ignace. I could get a good idea of what speeds boost the over all average and what killed it this way.

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post #98 of 102 (permalink) Old 11-06-2019, 01:36 PM
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Re: 6.0 best fuel mileage

16.5 is about par for a 6.0 with an automatic and 305 tires.

I suggest you read the stickies.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #99 of 102 (permalink) Old 11-06-2019, 02:17 PM
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Re: 6.0 best fuel mileage

i'm getting 16-17 highway currently with 285 width ATs in my auto 2wd 6.0 going 70mph :p
I'm kinda looking forward to getting a set of stock highway treads again. i miss 20 mpg and that smooth quiet ride!


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post #100 of 102 (permalink) Old 11-07-2019, 02:05 PM
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Re: 6.0 best fuel mileage

Quote:
Originally Posted by Turd-250 View Post
i'm getting 16-17 highway currently with 285 width ATs in my auto 2wd 6.0 going 70mph :p
I'm kinda looking forward to getting a set of stock highway treads again. i miss 20 mpg and that smooth quiet ride!
This is what drives me nuts. You're getting 16-17 going 70 with a 2wd truck. Your truck is lighter than my Ex, you have less parasitic drag with 2wd vs my 4wd, and you drive typically 10-15 MPH slower than I do. I have 285s as well....in 75-R18 flavor. 16-17 is my average, with both city and hwy factored in. When I'm doing strictly highway I get 18 usually, unless I drop my speed down to 75, and then I'm almost to 19. (these are all summer figures, of course) I just hate how inconsistent our mileages are. I realize there are a lot of variables, but it's crazy to see how wide a range we end up with.

2004 Excursion 6.0
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