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Old 12-30-2009, 05:03 PM   #29
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Update from Homer. 2535 trip just made. Mountains and some flatlands. Speed at 62-65 heavily loaded, pulling Malibu toad. MPG 8.9, still do not have 5000 on the odometer yet. Cambria 26-A E-450 Super Duty.
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Old 01-01-2010, 03:48 PM   #30
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On my 2008 Coachman Freedom Express , 25' , with the Chevy Workhorse 6.0 litre , carrying little cargo and going 60 mph.... the best ive seen is 11 mpg . And that is keeping it out of passing gear when going up inclines . Sadly, the front design of Class C's really catch the wind .
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Old 01-03-2010, 03:47 PM   #31
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I have a 2008 Holiday Rambler Atlantis w/ the E 450 -- Salesman said to expect 10-12 plus MPG -- He lied ! -- I drive no more then 60 MPH and have been getting 8.5-9 MPG with no toad --- I have 2500 miles on it now, so maybe I'll get better gas milage after a while ??
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Old 01-04-2010, 01:31 PM   #32
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Quote:
Originally Posted by FLORIDA FRED View Post
I have a 2008 Holiday Rambler Atlantis w/ the E 450 -- Salesman said to expect 10-12 plus MPG -- He lied ! -- I drive no more then 60 MPH and have been getting 8.5-9 MPG with no toad --- I have 2500 miles on it now, so maybe I'll get better gas milage after a while ??
I seriously doubt youll see any better mpg with the weight of your Rig. Use synthetic oil , keep the tires inflated to max., and try to keep the trans. out of passing gear --- thats your best bet.
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Old 03-02-2010, 08:05 PM   #33
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Gas mileage on 2008 E450 chassis, class c

We have a 2002 29' Winnebago with the V10. We typically get 8.5-9.0 mpg driving @ 60mph. Estimated weight is 13,000 lb.

In 2005 we drove from Anchorage, AK to Spokane, WA at 55-57 mph and averaged 9.3 mpg.

Unit is stock except for the Flowmaster muffler
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Old 03-07-2010, 02:08 AM   #34
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I bought a used 2004 Triple E Regency (E-450, V-10, 4 speed) with only 3k miles on it in Sept 09. Made two trips so far totaling just under 2k miles. Estimated weight is right about 10k with no toad. Mileage has been in the range of 8.4 to 9.4 between WA, OR and CA. Seems keeping it at 60-62 on the flats and dropping to 50-55 on the inclines while keeping it in overdrive helps get the mileage into the low 9s.
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Old 06-14-2010, 02:23 PM   #35
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I have a 2004 Jayco 28' motorhome on a 2003 Ford E-450. V-10. Amsoil air filter, mobile 1 synthetic motor oil, synthetic tranny fluid. Front Tires at 65lbs, rear st 80lbs. Getting 6mpg not towing and 5mpg towing a 2700lbs boat. I was hoping for better. I keep it around 58-60 mph. Any suggestions?
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Old 06-19-2010, 11:38 PM   #36
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I have a new 2010 Jayco Grayhawk 31SS. It has about 3800 miles on and I averaged 8.5, driving between 60 and 65.
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Old 06-20-2010, 06:03 PM   #37
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My used 2004 Jayco is new to me. So I've been experimenting with things to see if I could get a mpg improvement. I have been using 85 octane in the mountains where I live. I switched to 87 octane and my mileage went from an average of 6mpg to 8.5mpg, and that was into a 25mpm headwind and up and down a mountain pass. I'm anxious to see what I get without the wind. These figures were from my Scan Gauge.
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Old 06-22-2010, 03:10 PM   #38
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Update on my milage: No headwind, not towing this time, 87 octane, driving on flat terrain I got 10.1 mpg.
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Old 06-22-2010, 09:40 PM   #39
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just picked up our 2010 fleetwood tioga v10 E450 chasis, runs great we went on a 3500 mile trip got about 10.5 miles to the gallon no toad just loaded to the max with any and everthing we may need,we drove from our home in miami to durham NC stayed 2 days then maggie valley ersmokey mountains NC then piegoen forge TN stayed 4 days then drove through to TN and GA to tarpon springs FLA ,i have one complaint about the suspension and i am have air bags installed in the rear and bag in front coils and steering dampner ,
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Old 06-23-2010, 07:41 AM   #40
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You will be making a good move with the air bags on the E-450 IMHO. I have them and once you find the right pressure for your load and road conditions they are wonderful. Suggest you start with 45-55 lbs and adjust to suit your needs. They can be used for leveling also.
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Old 06-25-2010, 10:04 PM   #41
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My 2010 E450 Aspect gave us 7.2 mpg on a very recent trip across Canada and back No toad lots of wind and heavy foot It was lots of fun
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Old 07-09-2010, 02:48 PM   #42
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Just returned from a 10,280 mile trip from PA through OH, IN, IL, IA, NE, WY, CO, UT, NV to CA. Then it was up through OR & WA then meandered back through ID, MT, WY, SD, NE, KS, WV, VA etc. Just about all was on U. S. highways. We left on May 21st and returned July 8th.
We did not tow and did a lot of touring, including the Sawtooths, Bitterroots, Beartooth Pass, Rocky Mountain National Park, Yellowstone, etc. It was a great trip.

Our average MPG for the trip was just short of 11. However, it should be noted I did not use the tow/haul feature at all and seldom the cruise control. I also did not try to maintain speed on the uphills by letting the trans shift down a lot. Seldom did I see anything over 3500 RPM. The AC wasn't on much until we started the return. Then, it was on 95% of the time.

Truthfully, I thought the V10 would do a little better than that. Guess not.

Lastly, Ford clearly states that 85 Octane, which is considered regular in higher altitudes, should NOT be used. Also, we were able to get Regular with no Alcohol and saw improved mileage (so much for saving energy).
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