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Old 04-29-2016, 09:49 AM   #51
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Originally Posted by MikeRP View Post
Btw if you are looking for a new truck and Good fuel milage check out the dodge Ecodiesel. I'm getting 27mpg on average and folks who tow say they get 15-16mpg.

Btw my class c 32 ft Sunseeker towing my wife's Jeep Grand Cherokee gets 7.5 mpg. I stop every 250 miles to fuel up. But it goes fine.
That's exactly what I did. My 2015 JKU can pull our TT at 60-65 and manage 12mpg but it's spending way too much time in 3rd at 3300rpm or sometimes even 2nd at 4200rpm if there is a combo of grade and strong headwind.

And like the OP, I wasn't comfortable with my engine screaming along at that high an RPM for an hour. Or two. Or three.

So I picked up the Ecodiesel. It's a world of difference pulling our TT along at 60-65mph and getting 16-19mpg, mileage the Jeep only sees when it's NOT towing. The engine spends most of it's time at or below 2000rpm.

I'd prefer to tow with the Jeep because, well, it just LOOKS so good but in the end I had to admit to myself that it's just not the right choice.
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Old 04-29-2016, 09:59 AM   #52
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Originally Posted by Kenny kustom View Post
Measure the actual tire.
A 33" tire isn't always 33"..


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True. Actually, most of them aren't. They're typically around 32.7-32.8. Kind of like my Suzuki 400 ATV is only 372cc, or something like that.
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Old 04-29-2016, 10:04 AM   #53
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Ok I just know when I get tires the size is 255-70-16. So I would assume mine is stock.
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Old 04-29-2016, 11:39 AM   #54
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Assuming your motor is a 5.4, a 3.73 axle would be best all around. I'd get rid of the big tires and go back to stock wheels and e-rated tires. I don't trust tuners. You will still take a big hit on fuel economy. My 2004 went from 14mpg to 8-10, but I was pulling an 8,400lb FW.
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Old 04-29-2016, 12:36 PM   #55
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Originally Posted by MikeRP View Post
Btw if you are looking for a new truck and Good fuel milage check out the dodge Ecodiesel. I'm getting 27mpg on average and folks who tow say they get 15-16mpg.

Btw my class c 32 ft Sunseeker towing my wife's Jeep Grand Cherokee gets 7.5 mpg. I stop every 250 miles to fuel up. But it goes fine.
Anyway w that Sunseeker weighing 18500 lbs w the JGC in tow and rated for 22,000 lbs gcvwr, you can see it is in the gearing because the v-10 is 305 HP and 420 ft-lbs of torque which is less HP and maybe a bit more torque than a ford 5.4l or an Ecoboast.

The one thing I can say about the v-10 is that once it is broken in, it loves to rev, 4500 rpm it's purring like a kitten. Any other truck I've owned sounded horrible at that level.

So a ford truck used wit a v-10 would be a gas drink in tow beast.

But you'd be surprised what the little Ecodiesel will tow.
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Old 04-30-2016, 06:29 PM   #56
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towing my 2016ROO 21ss W/2015 F150, 2.7L EcoBoost, w/3.55 rear axle

Left last Sunday morning from the Milwaukee area headed to Land Between the Lakes Tennessee. Nice day and no wind to speak of. This was our first long trip with our new camper and truck! Around town and on the highway I get around 20 mpg. I was in shock as I could almost see the gas gauge needle fall. We went 140 miles before we had to fill up with 19.2 gallons of gas (7.3 mpg). Next pit stop was 125 miles, 22.2 gals, had about 1/2 gallon left in tank (5.6 mpg). Next stop was 130 miles, 18.5 gals (7 mpg). Next stop was 100 miles, 13.9 gals (7.2 mpg). We were head south on I-57 thru Illinois, flat as a board. The truck did not want to shift out of 4th gear. When it did it was just for a short period of time. I was going between 70 and 75 mph. After I got the 5.6 mpg I slowed down to between 65 and 70 mph the mpg went up to 7 mpg. I had to be going down a hill to see it shift into 6th gear.
The return trip I was able to keep it in 5th and 6th gear and around 8 mpg and my speed was between 65 and 68 mph. I'm not happy with the mpg, but from what I'm reading here, that is what I should expect.
We bought the trailer first and then the new truck. The dealer said there would be no problems pulling that weight of trailer with the truck we bought. I also talked to the trailer people and they also confirmed that I under the max towing capacity with this truck. It pulls with no problem, but it does use a lot of gas doing it. Not sure what a mountain trip will bring, but we will see soon!
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Old 04-30-2016, 06:41 PM   #57
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I was going between 70 and 75 mph. After I got the 5.6 mpg I slowed down to between 65 and 70 mph the mpg went up to 7 mpg.
You might want to check the speed rating on those trailer tires.
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Old 04-30-2016, 07:21 PM   #58
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The faster you go, the worse the mileage. Most of us do about 62 mph and get 9-11 mpg.

My advice - Slow Down!
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Old 04-30-2016, 08:33 PM   #59
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a 5-10 MPH head-wind or tail-wind can change your MPG by 1-3 MPG... slow down if going into a head wind to combat an MPG loss
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Old 04-30-2016, 08:37 PM   #60
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Quote:
Originally Posted by djemgoss View Post
Left last Sunday morning from the Milwaukee area headed to Land Between the Lakes Tennessee. Nice day and no wind to speak of. This was our first long trip with our new camper and truck! Around town and on the highway I get around 20 mpg. I was in shock as I could almost see the gas gauge needle fall. We went 140 miles before we had to fill up with 19.2 gallons of gas (7.3 mpg). Next pit stop was 125 miles, 22.2 gals, had about 1/2 gallon left in tank (5.6 mpg). Next stop was 130 miles, 18.5 gals (7 mpg). Next stop was 100 miles, 13.9 gals (7.2 mpg). We were head south on I-57 thru Illinois, flat as a board. The truck did not want to shift out of 4th gear. When it did it was just for a short period of time. I was going between 70 and 75 mph. After I got the 5.6 mpg I slowed down to between 65 and 70 mph the mpg went up to 7 mpg. I had to be going down a hill to see it shift into 6th gear.
The return trip I was able to keep it in 5th and 6th gear and around 8 mpg and my speed was between 65 and 68 mph. I'm not happy with the mpg, but from what I'm reading here, that is what I should expect.
We bought the trailer first and then the new truck. The dealer said there would be no problems pulling that weight of trailer with the truck we bought. I also talked to the trailer people and they also confirmed that I under the max towing capacity with this truck. It pulls with no problem, but it does use a lot of gas doing it. Not sure what a mountain trip will bring, but we will see soon!

My last rig was a 2015 F150 2.7 EB and a 2016 TT 7000# loaded. Through the mountains of NC MPG was 9.3. Ran tow/haul all the way. 6th gear was rare as there was little flat so only down hill for 6th, mostly 5th. Running the mostly flat coast MPG only went to 9.7 and did not see 6th gear much then either. Cruise was usually set at 64 MPH. Better than what you saw but I was not satisfied either so bought an entirely new rig.
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