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Old 09-26-2013, 10:14 PM   #1
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tow gas mileage

OK campers. I have an X17z and have used both a ford f150 with a 5.4 and an avalanche with a 5.3 and have averaged 9-11 MPG. Is. This normal? Both vehicles really seem to struggle.

Any help would be greatly appreciated!
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Old 09-26-2013, 10:23 PM   #2
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Lots of variables here... wind, speed, grades.

Very generally, we get 13 mpg running at 60 mph in "average" conditions.
Running at 70 we get 8 mpg. This is too fast, not safe and too expensive.
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Old 09-26-2013, 10:59 PM   #3
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I never got double digits when towing with my 1/2 ton Gassers. Typically I would get 9.5. With my Duramax it's close to 13.
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Old 09-26-2013, 11:10 PM   #4
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tow gas mileage

I took a 2,500 mile trip in June with my Duramax and calculated mileage of slightly over 14 mpg. My typical mileage is 16 without the trailer.
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Old 09-26-2013, 11:21 PM   #5
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I have a Jay Feather X213 and tow with a 2003 Expedition with a 5.4. I get around 22.5 L/100km towing (about 10 mpg) and around 12.5 L/100 running solo on the hwy (19 mpg).

Amazing the difference towing a parachute makes.
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Old 09-26-2013, 11:31 PM   #6
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05 Escalade 6.0 gas towing 2012 JayFeather X213. Worst I've had is 9 mpg and the best was 13.5 mpg, with a tail wind, at 55 mph, and following close behind a big motor home. I'm almost always right at 10 mpg.
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Old 09-27-2013, 03:39 AM   #7
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About the same here, towing the 17Z with our Silverado our best was 13mpg, with the wind behind us, worst was 8.5mpg, strong headwind. Typically 10-10.5mpg. We are getting about the same results towing our larger, heavier Starcraft.

Not sure why both vehicles seem to struggle, both of those engines should have plenty of power to pull an X17Z.
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Old 09-27-2013, 06:10 AM   #8
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Quote:
Originally Posted by drummer_43 View Post
OK campers. I have an X17z and have used both a ford f150 with a 5.4 and an avalanche with a 5.3 and have averaged 9-11 MPG. Is. This normal? Both vehicles really seem to struggle.

Any help would be greatly appreciated!
Mileage and struggling are two different issues. I have gotten 10 mpg average when I had my 17Z, even seen 12 mpg one time but never below 9.5 mpg. The largest component of drag (and hence the biggest factor in fuel consumption) is the frontal projected area of the RV. That is why I get the same mileage with my new RV which weighs almost twice as much.

As for struggling - that is a subjective term. When I pulled my 17Z I had a 3.08 rear end and it did not struggle at all. It handled towing with ease, never going above maybe 3500 rpm and living in the 1900 - 2000 rpm range. Note -- you should only limit yourself to 65 mph (max) because of the tires.
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Old 09-27-2013, 07:45 AM   #9
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I pull a 17Z with a Jeep Commander with a 5.7 hemi. Typically get 9-11 mpg, depending on wind conditions. Plenty of power, no struggling. I'm surprised to hear of a 1/2 ton truck struggling to tow a 17Z; what's the tow rating on the trucks? I used to have a 97 Grand Cherokee with the old 220hp 5.2L and even that vehicle pulled the 17Z ok (less acceleration but about the same mpg).
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Old 09-27-2013, 07:59 AM   #10
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On re-reading the OP's post I see that he did not state what years these vehicles were or what transmission and rear gear ratios, as well as what loading , etc. etc .... all can have a direct bearing on both "struggling" and fuel economy. No sense me speculating any more until he clarifies these points.
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