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Old 06-26-2012, 09:33 PM   #15
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I've towed my 8000 lb 31 foot Airstream at 55 mph 5 hours straight four times now to check mileage that can be had and have averaged 15 mpg all four times. Imperial gallon. That's in Ontario and down to Cleveland and back. I am very happy with that fuel economy. It does this at 1500 rpm with the 3.5 litre ecoboost six.
Oh and when not towing I can get up to 29 mpg.(imperial) You can't match that with a diesel. I understand how much more hp and torque the diesels have but from my experience with this truck I think it is overkill, and expensive to buy if only to tow an Airstream.
Al
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Old 06-26-2012, 09:43 PM   #16
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We've had our F-250 Power Stroke for about four months now and have towed our 31 Classic about 2k miles. Our old tow vehicle was a 2007 Expedition EL with the 5.4. There is no comparison. I debated a lot over the 6.7 or 6.2 gas burner before I settled for the diesel. Best decision I've made in a long time. I'm getting 13 towing and that is running 65 on the interstate. Unhitched I average 17 running around town and best I've done was 23 running 55 with the cruise set on level road. Best thing I like is the power and torque. No lack of power with this beast :-)
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Old 06-26-2012, 10:00 PM   #17
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I'm not sure that the comparison being cited by the OP is a fair one in any meaningful sense. Using identical trailers would even things out a bit and give a fairer set of figures. There is no mention, either, of the gas mileage when not towing which, for people like me who use their daily driver as their TV, is very important and one of my key factors in deciding what sort of tow vehicle to buy.
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Old 06-26-2012, 11:33 PM   #18
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Sounds more like someone loving his oversized truck (that's fine), than a comparison of two trucks; we don't even know what the other truck is.

For towing an Airstream and everyday use the F150 Ecoboost may make both of them obsolete.

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Old 06-26-2012, 11:44 PM   #19
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[QUOTE=dkottum;1166288]Sounds more like someone loving his oversized truck (that's fine), than a comparison of two trucks; we don't even know what the other truck is.

Try reading the second paragraph again.
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Old 06-27-2012, 12:10 AM   #20
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He slows down on grades because the truck wants to shift down often and high rev the engine. His concern is both engine wear and fuel mileage. He also has to be careful going down grades because there is not much engine assist in controlling speed. It tows fine on level ground and accelerates easily.
Hi, forget the comparison, if you want to go up hill with a gas engine you need to bring it up in RPMs into it's power range. And if you are going down hill, you need to manually downshift your transmission into the proper gear. My half ton Lincoln has been down many steep mountains with barely and / or never even touching my brakes. Sorry, but your friend needs a bigger truck and /or driving lessons.
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Old 06-27-2012, 12:10 AM   #21
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[QUOTE=hhendrix;1166291]
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Sounds more like someone loving his oversized truck (that's fine), than a comparison of two trucks; we don't even know what the other truck is.

Try reading the second paragraph again.
Still don't know how his F150 is equipped. Not that it really matters, many F150 owners quite pleased with their trucks as well, with different experiences than you describe.

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Old 06-27-2012, 07:13 AM   #22
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The Ecoboost engine is designed to rev to get enough HP to pull up a mountain. Just because an engine has to rev to produce power does not make it inferior. A Diesel does not like to rev over about 3600 RPM. The Ecoboost is probably running at twice that RPM and that is the way it is supposed to be. So I agree with Bob. If you are not redlining an engine and your oil pressure and engine temp are fine then rev the crap out of it. The valve train on newer engines is way superior to the V8 dinosaurs of yesterday. Yeah the old V8 engines would wear out running at 5000 RPM. The newer engines are just getting into their sweet spot at that RPM.

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Old 06-27-2012, 07:54 AM   #23
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Yeah the old V8 engines would wear out running at 5000 RPM. The newer engines are just getting into their sweet spot at that RPM. Perry
So true. We once had someone walk up to us in a campsite and comment
" How can you stand all that engine noise with the high revs when towing".

Folks just assume because to tow with a six you need to rev the heck out of the engine.

99% of the time we run 2,700RPM in 4th gear at highway speed. There is no engine noise. You can hear a slight wind noise and a slight tire noise but the engine is quiet.

On a grade if we need to drop to 3rd gear (3,500) you can hear the engine but only slightly. The engine will rev to 6,500 but I don't recall ever needing to go to 5,000rpms although having reserve power is nice.
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Old 06-27-2012, 07:56 AM   #24
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It seems that most currently produced diesels get no better mileage than their gas counterparts.
Not quite - the Super Duties with Diesel get better mileage than their gas F-150 counterparts yet are larger, heavier vehicles. When towing the same load, the diesel Super Duty surpasses the mileage of the gassers, the efficiency of the oil burner over the gas engine is quite apparent when comparing Super Duties with gas & diesel engines.
Bouns these modern oil burners - their exhaust is cleaner than the gas counterparts, although the engine may cost more - for those that require it, I think its the smarter of the two choices, especially if you are looking at keeping your rig long term or tow a substantially large sized RV through the mountains.
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Old 06-27-2012, 08:29 AM   #25
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Fuel mileage should not be compared without a cost per gallon adjustment. When I got my first diesel car the fuel price was less than gas, but it's been substantially higher for many years now.

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Old 06-27-2012, 10:53 AM   #26
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You also need to consider the total cost of ownership. Purchase price, oil changes, filter changes, DEF Fluid, Cost of Fuel. Cost of tires is usually more on bigger trucks as well. Availbility of fuel is also an issue with Diesel. You can get gas anywhere. I have also found the many stations gouge you for diesel. Gas here is $3 a gallon but diesel is $3.80 a gallon. In the old days when diesel was cheaper than gas then it made a lot more sense. Buying a used diesel is risky and repairs are not cheap (been there done that). The argument that diesels last longer than gas engines is pure crap. 20 years ago that may have been the case but not now.

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Old 06-27-2012, 12:48 PM   #27
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I looked at the cost of diesel vs gas, along with many other things. We have always had vehicles which burn gas. Being we are about to retire and plan to do some serious towing, the ability the diesel has in power and torque over the gas engine is something I had to consider. The cost of gasoline vs. diesel is not something which would make or break my decision. My dad is 82 and towed for years with a gas engine. In 93 he went to a diesel (still has it) and when I asked him if he would do it all over again, being diesel is now higher than gas, he said his diesel has never lacked for power when needed. When I shopped for a truck I mentioned the 6.2 gas burner to the salesman and he said it was a gas hog. With all of the incentives ($3k off the diesel package) and able to do a "fleet buy" I just decided to go all out and get a truck that would last me for years. Our trailer comes in around 7k lbs. which is not a lot of load for the F-250. I have heard a lot of good things about the Ecoboost V-6. I say if the smaller 150 works for you....then go for it. I like having LOTS of reserve power and torque :-)
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Old 06-27-2012, 03:16 PM   #28
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I found the orginal post interesting, even though as he said it was just observation not science. More than the mileage comparision it seemed he implied that he found the drive on the trip to Alaska a lot less work with his diesel than the driver of the gas truck did. My interpretation of his comments only.
Having driven the Alaska Highway many times, I lost count after the first dozen, I will say the last trip with my '08 Dodge and Cummins was a lot less work than making the drive in the gas trucks of the past, a F150 and a Chevy C30. Trailer loads with the two one tons were all in the range of 7k to 9k lbs, lighter on the F150. The built in engine brake on the Cummins 6.7 is sure nice on the decents which are generally steeper and more frequent than found any lower 48 roads.
As many posters have pointed out however, you need to buy what suits you, for me is sticking with the Dodge.
Now I just need to get rid of this SOB and find my Airstream!

Rick
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