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Old 09-16-2012, 11:03 PM   #29
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If gas prices are moving you to a new tow vehicle that gets better mileage, buy it soon! The same thing that has driven up the gas prices (money printing) is going to add $3-5K to a decent sized truck over the few years (inflation due to devalued dollar).

Replacing the crime syndicate running the Treasury and the Fed will do more to return the freedom of the road, than replacing our TVs.

IOW... treat the cause rather than the symptom.
Well, this is off topic, but note that inflation is currently at only 1.4% (lowest yearly avg. since 2002) and fuel prices are lower than when I bought my vehicle in 2008. With the rebuilding of our highways and National Park roads over the last two years, travel is better than it's been for a long time!
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Old 09-16-2012, 11:39 PM   #30
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umnn - My newspaper buried the story around page 5 in the business section that producer prices were up 1.4% in August - 22% annualized...

The mileage factor is important for this owner - the cash capital expenditure of outright vehicle purchase was a long term budget goal, however the fuel costs dipping into future limited income is painful. Using my earlier non-airstream travel fuel budget with the trailer towing 9.0 to 12mpg and the current fuel costs all signs point to be able to drive from one interstate rest stop to the next one - once per day.

I hear the whisper here that lower towing speeds are key to better mileage. I'm a great believer in 9pm to 6am distance driving & holding the speed at 53-57mph... Time I have oodles of, cash to cover $100+ fill-ups every 200 miles I don't have. ('99 F-150 4X4 5.4L)

9hr x 50mph = 450mi and 12mpg or 37.5gal or $150 @ $4ga.
9hr x 60mph = 540mi and 9.5mpg or 56.8gal or $252 @ $4ga.

So that is 90 miles make-up driving @ 12mpg = 7.5gal or $30 @ $4ga.

After 540 miles there is a $72 real dividend in my checkbook that will buy 18 gal or 216 miles range by adding less that two hours to the travel time.

Now if I could only count on 15 or 18mpg while dragging, errr.. towing my Airstream
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Old 09-16-2012, 11:39 PM   #31
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An interesting thread - I tow with my 2001 Sube with the 5.3 and 3.83 rear end (and 4wd). We have gotten as high as 13.5 and as low as 11.6 - so I imagine that's really averaging right at 12 mpg or maybe a little better. (I think it's difficult to know for sure since there's gotta be error in each fill-up and mileage calculation.) That's 65 mph and occasionally 70 on the interstates, but it seems to me that we've noticed lower mpg's when we're on the interstates and higher on two-lane roads. I'm wondering if it's the 4.11 rear end (or 4.10?) that might be making some of that difference?
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Old 09-17-2012, 02:22 AM   #32
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Just personal experience, but in my case, lower interstate mileage was due to higher cruise speeds (and thus, higher wind resistance), and additional fuel wasted speeding up to pass and then slowing down afterwards. With ST tires, I didn't want to cruise at 70-75 mph; so I would speed up briefly to pass, then slow to 65 afterwards. However, the higher cruise speed meant that I was constantly overtaking slower cars, and having to speed up to pass them.

Reducing cruise to 55 mph allowed me to maintain a constant lower speed that reduced wind resistance and eliminated the constant speeding up and slowing down. And, similar fuel economy was achieved on lesser used two-lane highways, because of lighter traffic where 55 mph could be maintained with no passing.

During the Arab oil embargo, the US Government imposed a nationwide speed limit of 55 mph to reduce fuel consumption. That speed is still valid today, if one chooses to use it.

=================

For background info on the Arab oil embargo of 1973, see link below:

1973 oil crisis - Wikipedia, the free encyclopedia
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Old 09-17-2012, 06:43 AM   #33
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I think the smart money is on an older TV. I have an 01 v10 Excursion. It returns 15 MPG towing my triple axle. Excellent condition for around $6000. Even at 15 MPG I can afford all the $5 a gallon gas since I'm not in $60k for a new diesel pu. Very pleased with my choice/ decision.
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Old 09-17-2012, 07:19 AM   #34
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How much does Ethanol reduce emmissions? Does anyone balance the equation of energy in versus energy out? Also there is the fact the Ethanol seems to reduce gas miliage about 10% which causes you to burn 10% more gas which totally negates the stuff being in there. Yes I know if you look at BTU content the 10% ethanol should not lower gas miliage but it does. It probably has something to do with combustion temperatures. I have had to clean the carbs twice this year in my motorcycle because of ethanol in the gas. It has 4 carbs and they are a pain to remove. Ethanol is corrosive and it makes the gas go stale much quicker.

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The inclusion of ethanol does help reduce emissions (it adds oxygen to the fuel), but the reason we have so much of it in our gas is that it is a subsidy for the corn growers. So it's not eco-politics - it's farm state subsidies for large corporate growers.

- Bart
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Old 09-17-2012, 07:22 AM   #35
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How are you getting 15 MPG towing with a V10 Excursion? Mine won't get 15 MPG empty. It is a good cheap tow vehicle. I love mine even at 9 MPG towing my 31 ft trailer. That is towing 65-70 MPH. Slowing down might get me to 10 MPG. You must have a light foot and the 3.73 rear end.

Perry

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I think the smart money is on an older TV. I have an 01 v10 Excursion. It returns 15 MPG towing my triple axle. Excellent condition for around $6000. Even at 15 MPG I can afford all the $5 a gallon gas since I'm not in $60k for a new diesel pu. Very pleased with my choice/ decision.
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Old 09-17-2012, 08:16 AM   #36
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^^^ Thats what I was about to say lol. V10s are notoriously gas hogs. Iv honestly never heard of a v10 getting 15 empty...
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Old 09-17-2012, 08:28 AM   #37
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An interesting thread - I tow with my 2001 Sube with the 5.3 and 3.83 rear end (and 4wd). We have gotten as high as 13.5 and as low as 11.6 - so I imagine that's really averaging right at 12 mpg or maybe a little better. (I think it's difficult to know for sure since there's gotta be error in each fill-up and mileage calculation.) That's 65 mph and occasionally 70 on the interstates, but it seems to me that we've noticed lower mpg's when we're on the interstates and higher on two-lane roads. I'm wondering if it's the 4.11 rear end (or 4.10?) that might be making some of that difference?
I am glad to hear from someone with the same car using a 3:83 gear. I suspect my 4:10 is one of the problems. Something to think about.
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Old 09-17-2012, 08:36 AM   #38
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Threadjack!

Im debating swapping my 3.55s for 4.10s though. 4.10s are a "towing" gear, 3.73s are kinda in the middle, and 3.55s are more of a cruising gear. Anything less makes for a DOG when towing but good mpg unloaded. I dont think youll see too much of a gain in mpgs to justify swapping out a $300 set of gears
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Old 09-17-2012, 08:49 AM   #39
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Just to fill in details...
My Suburban is a 2007 1500 4WD w/5.3L/Auto/4:10 gears. It has 83,000 miles. We use it 75% for towing.
Have you ever considered using your Suburban 100% for trailering, then buying a new "daily driver" like a Prius C for $18,000?

You would have a lot more fun driving, and get an overall 53 mpg. I think that your service costs would drop, too.
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Old 09-17-2012, 08:52 AM   #40
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^^^ He's gotta point! Or if moneys tight, you can get a semi-used Jetta TDI @ 45 mpg for under $10,000! Or a used Prius lol.
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Old 09-17-2012, 08:55 AM   #41
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I don't use my Excursion as a daily driver. It is hard to find a tow vehicle that can do double duty and still pull a big trailer, at least without spending $40k+. I would love an F-150 Ecoboost but I have not found any free ones out there.

Perry
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Old 09-17-2012, 10:16 AM   #42
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Actually, this has gotten a bit off my original quest. I am not in the immediate squeeze of trying to save a few bucks on gas, as much as I am interested in the technology of towing a trailer - - wondering why we don't have a 15MPG TV. Is it impossible, or is it a lack of demand?

Someone early on mentioned a 6-cyl diesel that was getting 15MPG towing, but it is like 12 years old. And old cars have their own set of problems. Where's that vehicle in a 2012 model?

Apparently, there isn't really any current solution. Although that Sienna was a bit closer at 12MPG. That wouldn't be interesting enough to make me change.

When I bought the Suburban I didn't look very far off the conventional thinking track. I considered PUs (don't like them) and I briefly considered F350 Van (hated the driving position and entry to vehicle). I didn't at all consider such things as Sienna, or other V6s, because I was under the impression a V6 simply would be too small. So, when it's time for my next TV (whenever that is), I want to be sure I look more carefully at all the options that might give better economy.
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