Towing milage - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 13 Old 05-30-2012, 05:47 PM Thread Starter
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Towing milage

I used my 5th wheel this weekend for the first time with the tune and the delete's I went 65mph cruise flat driving on hot dam power (50) with SSL 1 trans tune. I got 11.5 and 9.5 MPG, Is that right? I also only have got the best average of 17 to 18 MPG with nothing in the truck on mild tune. Anyone with these results? or is something wrong?

2015 F-350 Platnum FX4 Superduty 4X4 6.7L crew cab Longbed 3.55's 5th wheel prep

Old truck's 95' 7.3 LB EXT 4X4 285,000 miles very much Missed! 08' F-250 6.4 fully deleted

Lots of mods to come

Quote:The right of the people to bear arms shall not be infringed.
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post #2 of 13 Old 05-30-2012, 05:52 PM
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What is the approx. weight on your trailer, and what gears are you running?

Those are the first two factors I consider when you talk about mileage towing.
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post #3 of 13 Old 05-30-2012, 06:40 PM
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sound about right. i experience the same.

*NEW:
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post #4 of 13 Old 05-31-2012, 02:42 AM Thread Starter
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3.73's and about 8,000 lbs.

2015 F-350 Platnum FX4 Superduty 4X4 6.7L crew cab Longbed 3.55's 5th wheel prep

Old truck's 95' 7.3 LB EXT 4X4 285,000 miles very much Missed! 08' F-250 6.4 fully deleted

Lots of mods to come

Quote:The right of the people to bear arms shall not be infringed.
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post #5 of 13 Old 05-31-2012, 03:01 AM
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FOR COMPARISON

not tuned....3:55 gears and about 18000lb combined.....ran 1200 miles to bishop ca from central az [cruise set at 65]....i never reset comp. milage...starting trip was 12.5 mpg...end of trip 11.4 mpg.........regen every 180-200 miles....oil temp and coolant temp 230* at times....intake air 150* at times...tranny temp stayed good..never above 207*.gotta say my 90 gals of onboard fuel at start of trip was treated with diesel clean and my regens were 350-400 miles apart ...didnt use additive after that and regens alot more frequent.[yes i know you guys dont regen any more ].

2008 6.4 job3 F250 3:55 gears 10K gvw silver stretchcab 8ft box.timbrens and goosenek hitch.51 gal aux tank.
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post #6 of 13 Old 05-31-2012, 06:37 AM Thread Starter
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Thats not too bad not tuned! About what I got tuned.

2015 F-350 Platnum FX4 Superduty 4X4 6.7L crew cab Longbed 3.55's 5th wheel prep

Old truck's 95' 7.3 LB EXT 4X4 285,000 miles very much Missed! 08' F-250 6.4 fully deleted

Lots of mods to come

Quote:The right of the people to bear arms shall not be infringed.
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post #7 of 13 Old 06-01-2012, 02:43 PM
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Best I have ever got towing with any tune is 9.5 thats towing 10k 5th wheel.

08 F250 CC, 4x4, Blue/Pueblo Gold, 3.73, S & B CAI, 5" Magnaflo downpipe back, Spartan TCM 275 & 310 KEM 345 (SCT - Sold) Mickey Thompson 35 12.5 20's

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post #8 of 13 Old 06-01-2012, 05:55 PM
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What tune & tuner were u running

Sent from my SCH-I500 using AutoGuide.Com Free App
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post #9 of 13 Old 06-15-2012, 06:39 AM
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Quote:
Originally Posted by muntu View Post
not tuned....3:55 gears and about 18000lb combined.....ran 1200 miles to bishop ca from central az [cruise set at 65]....i never reset comp. milage...starting trip was 12.5 mpg...end of trip 11.4 mpg.....
11.4 on the Fool Computer is probably 9.5 to 10 real MPG.

Unless you have changed the wheels the odometer is very accurate. The gallons on the dispenser pump is also much more accurate than Ford's Fool Computer.

You need to spend some time noting both for comparison. I find Ford lies by 15% to 20%. Recently 14.6 displayed was 14.3 shown, and I was shocked. First tank of the day. But the next was also 14.6 showing and only 12.2. The next was showing 13 but was a touch over 10. Towing 6,000 pounds and staying under 60 MPH.

The 10 MPH had a lot of slow off-road towing and idling just to run the A/C. MPH improved on the return trip but still in the 12's.

2008 F250 Lariat CC 4x4 white/gold
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post #10 of 13 Old 06-15-2012, 09:00 AM
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run the wild tune and that should improve,, i tow an 8000lb trailer on wild,+180 ? , at 70 75 and get a little better than 10mpg.... higher HP will tow easier and be more efficient..


08 F350 MINI MAXX,5"FLO-PRO DPF DELETE, AFE INTAKE,HID'S,BFG A/T'S ON 20" BMF NOVAKANES,TIMBREMS,BLACKED OUT BUMPERS GRILL,STEPS RACING STRIPES,PAINTED HEADLIGHTS ,FABTECH LEVELD,RCX DUAL STABILISERS
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