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Old 09-10-2012, 06:50 AM   #41
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A gauge gizmo I put in that helps a bit on a gasser is a vaccum guage. You could also put in a fuel efficiency guage which does the same thing for a lot more scratch. Helps you drive so you suck up last gas. My next door neighbor car parts dealer told me about it.

He also told me to keep my 99 F250 as long as possible. Better than the new trucks. Shooting for 250,000 m.

Also because of emissions changes, yes, the mpg advantage of diesels is just not there with the new diesels.
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Old 09-10-2012, 08:06 AM   #42
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We're averaging just under 12MPG towing with our V6 Traverse, about 1MPG better than our old 2001 V8 Yukon. But the real advantage is the improved mileage when not towing, which went from about 14MPG combined to around 18 or so.
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Old 09-10-2012, 08:46 AM   #43
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Yup, headwinds kill mileage. Worst ever was 10.8 into the Santa Anna wind. Best ever, 17.3. If I'm not climbing above 10k' I can average 15-16.5 with our '06 Honda Ridgeline. We tow at 60-65. The Ridge seems to feel comfortable at 64.
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Old 09-10-2012, 08:53 AM   #44
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Looks like the best mileage was from a Dodge with a Cummins, followed closely by a Mercedes with a diesel!

Its lookin like almost no matter what you tow with, you can expect between 10 and 14...
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Old 09-10-2012, 09:27 AM   #45
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2008 Grand Cherokee 3.0 Bluetec Diesel, full time 4WD, 376 ft lbs torque.
Avg non-towing 25 mpg.
23' Flying Cloud FB. 5673 lbs loaded.
Towing range 13 to 18 mpg. Best 18 mpg at 60 on Hwy 50 across Nevada.
Worst 13 mpg at 60 across Oklahoma on I-40 with headwinds and temp > 100º.
The CRD likes altitude and cool temps.
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Old 09-10-2012, 09:56 AM   #46
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At 58 mph, no hills or wind I got 15 mpg towing with my '99 F250 7.3 diesel. Same 25' Airstream trailer with '11 Tundra under same conditions was 12 mpg. My current 24' class C motorhome w/ Ford V10 gives about 10 mpg under these optimum conditions.

Real world numbers were worse because this scenario is rare. But the minute you put in braking, curves, mountains or wind it is pretty hard to get an apples to apples comparison.
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Old 09-10-2012, 10:24 AM   #47
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Towing a 2011 28' International with our 3.5 litre V6 Toyota Sienna, we averaged over the 2012 camping season 12.8mpg (US). Most terrain was pretty flat and we tend to do around 60-65mph. Our best ever was 14.9 on flat terrain with no headwind doing around 50mph. Our worst was 10.1 on a wet and windy day on our way back from the Finger Lakes in NY.

Our real advantage is the average 28.4mpg when not towing :~)
UKT, I just read this post on another RV forum

Quote... "We have a 2006 Toyota Sienna towing a 2012 Scamp Deluxe with A/C. I drive 55-60 mph. Average fuel economy is 15 mpg over lots of different terrain. Best was 16.5 mpg totally flat (FL) driving 55 mph. Normally I average 19 in the city (ALL city with lots of lights) and 24 on the highway at 70 mph. Where it's flat I stay in 5th gear but through hilly terrain I drop to 4th to avoid the transmission hunting." __________________
2006 Toyota Sienna XLE

The lady is towing a 2,000lb fiberglass egg trailer. Goes to show how well the Airstreams tow.
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Old 09-10-2012, 10:44 AM   #48
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I wonder how many mpg would be subtracted due to the higher cost of diesel fuel compared to gas, to more closely compare fuel cost. I thinking 3 mpg as an average?

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Old 09-10-2012, 11:09 AM   #49
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We tow a 16' 3500 lb Bambi with a 2011 crew cab Toyota Tacoma. We get around 15 mpg if we keep our speed at or under around 60 mph.

Most of our driving is in mountainous terrain.

But-- with a smaller truck which is our general all-purpose vehicle, we get around 22 mpg the rest of the time.
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Old 09-10-2012, 11:10 AM   #50
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I tow a 25' 2001 Safari (5M LBS.) with a 2003 Dodge 2500 Cummins Diesel. Get 17 MPG in the south and east of Texas, running 60 MPH.

Just bought a 31' Classic (7M LBs.) and towed it from Atlanta Ga to East Texas with cruise set on 70. Got 13 MPG but started trip by getting lost in Atlanta and driving about 1 hour in stop and go traffic before getting back to Interstate 20.
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Old 09-10-2012, 12:52 PM   #51
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With current tow vehicle, 16 towing, 16 around town not towing and 20 interstate not towing. Last truck was half ton Chevy, 5.3? Liter, 11 towing and 16 to 20 around town and interstate. Jim
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Old 09-10-2012, 01:11 PM   #52
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Quote:
Originally Posted by Road Ruler View Post
UKT, I just read this post on another RV forum

Quote... "We have a 2006 Toyota Sienna towing a 2012 Scamp Deluxe with A/C. I drive 55-60 mph. Average fuel economy is 15 mpg over lots of different terrain. Best was 16.5 mpg totally flat (FL) driving 55 mph. Normally I average 19 in the city (ALL city with lots of lights) and 24 on the highway at 70 mph. Where it's flat I stay in 5th gear but through hilly terrain I drop to 4th to avoid the transmission hunting." __________________
2006 Toyota Sienna XLE

The lady is towing a 2,000lb fiberglass egg trailer. Goes to show how well the Airstreams tow.
I never doubted it
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Old 09-11-2012, 07:06 AM   #53
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I think the fuel is the cheap part. A years fuel cost are a couple of thousand dollars. Why would you spead 20 or 30K to get a couple of MPG more. It make no sence to me. My friend has a hybrid that cost him 20K more than a equal size gas car to save maybe $1000 in fuel.
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Old 09-11-2012, 08:00 AM   #54
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Id save $1000 in fuel (per year) if I got a truck that got 7 mpg more lol. Iv done LOTS of research the past few days lol.

But I see where your goin. Buying a Volt that costs $40,000+ vs a VW Jetta TDI at $28,000 fully loaded and still gets 4 mpg better... no brainer...

My biggest fuel cost is daily driving. My truck gets 11 unloaded, 9.5-10 towing. Im not gonna deny, I was very surprised to see my mpg only drop by 1 mpg towing a huge camper but its still eating me lol.
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Old 09-11-2012, 08:02 AM   #55
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Average MPG

I tow with a 2002 Toyota Sequoia. Not towing we get around 15 MPG. When fully loaded for a big trip our combo weighs around 13,000lbs. I usually drive 70 on the Interstates when limits allow and the posted limit (conditions allowing) everywhere else. On our most recent trip to Colorado, Utah, Arizona and New Mexico we logged 3,422 miles towing and averaged 9.12 MPG.
Better towing economy would be nice, but the Sequoia is paid for and is a great tow vehicle for a family of five in my opinion.
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Old 09-11-2012, 08:08 AM   #56
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Thats a good reason to keep it lol
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Old 09-11-2012, 08:35 AM   #57
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I usually budget for 12 mpg when preparing for a trip. My truck dances by 1 mpg one either side of 12 depending on the hills and headwinds. Truck seems to like 65-70 mph - this is where the transmission rarely downshifts from 6 to 5 on the interstate hills.
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Old 09-11-2012, 09:50 AM   #58
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Funny Stuff

These threads make me laugh. I belong to a fly fishing club and the local fish and games people were trying to get a handle on why one of the fly fishing only lakes was on a decline. They came to the club and asked every member to record the number of fish and the size each time they went out. After a year of gathering data the club had listed many fish in the 15+ inch size and most of those were over 18 inches! The biologists went out and shocked the lake and found very few over 15 inches and NONE over 18 inches!

Fishermen are the best liars out there and then, I feel anyway, it has to be truck drivers pulling trailers. So here is my offering and it is pure truth, every word.

'08 Tundra 5.7, 4 wheel drive with tow package pulling my 25 footer. Just got back from a 400 mile trip that was relatively flat and got 12.4 mpg. But, to be totally honest, on longer trips I get just a hair over 11. On the 3877 mile trip to Albuquerque last year I got 11.3
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Old 09-11-2012, 12:45 PM   #59
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Most of the mileage reports here seem to be in line with expectation. Yes, it is wind and terrain that would make the biggest difference. Most of my driving has been in flat areas. The wind made a huge difference on that trip coming home. Semi trucks were, at times, getting heavy crosswinds and veering out of their lane ahead of us. When we would turn into the wind, my mileage dropped 5-6 mpg. That is quite a bit of resistance. As far as diesel/gas, I have a diesel car. The diesel has particular benefits besides mpg; however, it is a consideration that one has to consider when paying more for fuel.
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Old 09-11-2012, 12:52 PM   #60
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Towing a 2005 International CCD 28' (5,500 empty, probably 6,500 with my gear, empty tanks) with a 2011 Dodge Durango V8 AWD, probably averaging 11-13 mpg, worse in the hills.
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