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Old 12-28-2012, 10:09 PM   #11
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I have the 6.0 in our 2007 F250 and I love the truck. Our last truck was a Chevy Silverado with a 5.3 LTR and we pulled a 27ft TT Mileage was about 8.5 to 10mpg depending on conditions and terrain. That trailer weighed in at about 6500. Now in out Ford we pull a 34ft 5er weighing about 11,000 loaded and are getting from about 10.5 to a bit over 11.5 and I'm very happy with that. When not towing I get about 14-15 mpg mixed city/highway and about 17.5 to 18.5 highway only. I am aware of the potential problems with the 6.0 and also have a Ford ESP for extra insurance. I do maintain the truck as laid out by Ford but I change the coolant at about 30K. Lots of folks who bad mouth the engine have never owned one so they are only parroting what they hear. I'm very happy with my truck so far and would own another. There are 10s of thousands of these motors out there doing just fine, in fact there is a guy over on the FTE forum who just did a complete rebuild on his engine but he had 582,000 miles on it when he tore it down. Lots of guys out there with 200k on them.

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Old 12-29-2012, 09:03 AM   #12
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6.0 Ford diesel was a lemon... ford is suing Navistar over it. HOWEVER there are things you can do to get better mileage. Tires... you want highway tires not knobbies. Change out your air filter for a low restriction washable one... Doing this my D-max gets 22 mpg highway solo and 13 towing.
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Old 12-29-2012, 01:26 PM   #13
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Wellcraft, Steve is right. I had a 6.0l in my 05 Excursion and really liked it. I did my homework and it seemed they had all the bugs worked out by 05. The only issue I had was at 120k the egr valve failed. 300 bucks and I installed it myself. I strongly recommend at some point that you have an aftermarket egr cooler installed. I think they run somewhere around $400. I was getting around 10.5 mpg towing 8000lbs. 19 mpg on the hwy without towing. My maximum mpg's came after the engine had about 50k on it. Remember, the harder you work the 6 liter, the cleaner it stays. I traded it in this year with 170k on it for a new F-250 with the 6.7. By the way, my 2000 Excursion had the Triton V-10. I thought it was one of the finest engines ever made. Good luck. Terry
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Old 12-29-2012, 02:12 PM   #14
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We have an F350 with the V-10 gasser, and have had absolutely NO problems towing an 11,000# 5er. Maintenance is much simpler than a diesel, and gas mileage suffers only on long steep hills. I average about 9-10 mpg towing, and while the diesel gets a little better on average, you can buy an awful lot of gas for the extra $7,000 cost of a diesel. JMHO
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Old 12-29-2012, 06:00 PM   #15
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you can buy an awful lot of gas for the extra $7,000 cost of a diesel. JMHO
Yes you can buy a lot a fuel for $7k, but remember there will always be a premium for a diesel over a gasser. Diesel is a lot like 4x4 in the sense there is up front cost, different maintenance requirements, and not everyone needs or can justify it; but a lot of the upfront additional cost comes back when selling it later on.
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Old 12-29-2012, 08:21 PM   #16
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I went out on a limb and bought a Ford F-150 with the 3.5 liter Eco-Boost motor. The little engine produces tons of power with a nearly flat torque curve above 2500RPM peaking at 420 ft/lbs. around 3000 rpm. Towing our 8000# trailer it gets 11 mpg. Without the trailer, around town I'm getting 18, highway 23 mpg. At times on a very level road at a steady 50 mph, it gets around 27 mpg. The 'limb' side is the 2 turbo-chargers, 4 valves/cyl, direct cylinder high-presure fuel injection, DOH Cams with independent cam timing. etc. etc....

I love the power it produces, and the non-towing milage it gets. We'll see if I made a good decision.
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Old 12-29-2012, 11:20 PM   #17
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The 6.0 is a temperamental engine. I have had problems with mine, but mileage is not one of them. Empty I can easily see 22 highway. Around town I get about 16. Towing my 5th, it of course drops but still 12-14 is pretty typical. I haven't pulled with a V10 so I can't compare, but I understand that the V10 is a beast. If you're seeing really poor mileage, you may have another issue with the truck. FICM, High Pressure Oil leaks, Injectors, Turbo are all pretty common across all years and something to look into.
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Old 12-30-2012, 06:39 AM   #18
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The biggest factor I see in getting better mileage when towing or not, is to keep your foot out of it off of the line and slow down. Jack rabbit starts kill mileage and trying to drive the same way with 4-5 tons behind you as you do when not towing is a real mileage killer, not to mention being very hard on your transmission.

I am a very non-aggressive driver. I accelerate slowly towing or not and I regularly see 12.5 mpg towing and 20 mpg when not towing. My cruise speed when towing is 60 mpg maximum and 65'ish when not towing. My truck is bone stock and will remain that way.

One thing I will NEVER do it change my air cleaner to a K&N type. Way too much "stuff" allowed through the filter and then through my engine. High flow=less filtration. Numerous independent tests have proved this. Besides, cleaning that filter is messy and not nearly as easy as just popping in a new OEM one when needed.
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Old 12-30-2012, 07:13 AM   #19
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The biggest factor I see in getting better mileage when towing or not, is to keep your foot out of it off of the line and slow down. Jack rabbit starts kill mileage and trying to drive the same way with 4-5 tons behind you as you do when not towing is a real mileage killer, not to mention being very hard on your transmission.

I am a very non-aggressive driver. I accelerate slowly towing or not and I regularly see 12.5 mpg towing and 20 mpg when not towing. My cruise speed when towing is 60 mpg maximum and 65'ish when not towing. My truck is bone stock and will remain that way.

One thing I will NEVER do it change my air cleaner to a K&N type. Way too much "stuff" allowed through the filter and then through my engine. High flow=less filtration. Numerous independent tests have proved this. Besides, cleaning that filter is messy and not nearly as easy as just popping in a new OEM one when needed.
Yep, fuel mileage drops off very steadily above 55 mph, It's a fact. Only mods that will help much besides slowing down are gearing and aero dynamics.
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Old 12-30-2012, 09:33 AM   #20
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I bought this truck because it is a crew cab needed more room for 2 kids, the V10 was an extended cab and as the kids got bigger the cab got smaller, also for the additional puller power I though. A lot of people I have spoken to over the past couple of days/weeks must never towed with the V10 so had no comparison. but at this point I'm stuck with this for a while anyway and maybe I'll get use to it. never owned a diesel before. have done a lot of home work as far as maintenance. also dropping off at dealer on weds. to see if the truck has been programed before and if so can they flash it back to factory. there were signs of a programer be in the truck. like i said earlier the other appeal for this truck was that it only has 33000 on it and is spotless inside and out. I never really posted much of my own questions on here and want to thank everyone for there input. John
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