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Old 01-08-2014, 08:59 AM   #11
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You guys are getting some really great milages per gallon. Or your calculators are off, or my E450/2008/3100ss is really sucking. I normally drive flat lands of Florida between Jacksonville and Gainsville, Lake City, Orlando and 98% of the time pull a little Chevy Colorado and drive 55-60mph (in tow mode) and only get 6-7mpg. I have less than 12K on the unit and it is in great mechanical shape. I would kill for 9-10mpg...just saying.

"Tow Mode" kills your fuel mileage. It keeps engine RPM and shift points up, doesn't allow the torque converter to lockup, and I think it restricts the use of the overdrive fifth gear. If you are in the mountains maybe tow mode is needed but not in flat Florida.
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Old 01-08-2014, 09:21 AM   #12
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X2 on tow mode. Not needed on flat land
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Old 01-08-2014, 09:26 AM   #13
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Tow mode does eat more fuel... It modifies shift points and tightens up shifts so the packs in the automatic transmission don't slip or wear out prematurely.. I believe it keeps the fluids circulation thru the coolers keeping temps down as well due the the higher rpm.. With tow mode off my trans temp will go up to about 210.. With it on at most 190 degrees..it also acts as an engine break too.. I tend to always use it..
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Old 01-08-2014, 12:43 PM   #14
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OK I will do it without Tow Mode next trip and see how that works. I do like it for overpass here in Florida as you set teh autocruise and it goes on down the road smoothly.
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Old 01-08-2014, 02:01 PM   #15
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I love cruise control but even in flat lands it seemed to cost me close to 1 MPG with my mini MH B+ Chevy.
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Old 01-08-2014, 02:12 PM   #16
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Ours is hardly broken in, but we're averaging 8 by odometer and 7.2 by GPS. This should get better when it warms up in the spring. There was some generator time sprinkled in there....
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Old 01-08-2014, 06:18 PM   #17
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Don't forget to consider our model differences. I'm in a 2450 which is quite a bit lighter and smaller than a 30+ ft mh. Its all relative. I used the tow mode anytime on incline and declines. On flat land I left it off.

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Old 01-08-2014, 07:43 PM   #18
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Gas Mileage

I have a 2013 3100 with no toad. I get some hills on 75 around the Smokey Mountains. The 450 downshifts going up hills quite a bit. Would tow mode help prevent that? Can I use tow mode while not actually towing? Can I press the tow button while in motion?

Guessing it's yes to all 3 questions but wanted to ask...
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Old 01-08-2014, 08:39 PM   #19
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Yes to all 3

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Old 01-09-2014, 05:47 AM   #20
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I have a 2013 3100 with no toad. I get some hills on 75 around the Smokey Mountains. The 450 downshifts going up hills quite a bit. Would tow mode help prevent that? Can I use tow mode while not actually towing? Can I press the tow button while in motion?

Guessing it's yes to all 3 questions but wanted to ask...

If you find the transmission shifting down then up several times on a hill, tow mode will help. It will still downshift but hold the lower gear a little longer. On downhills the transmission will downshift and help hold speed instead of riding the brakes. I don't tow anything, but use tow mode when in mountainous areas (Ozarks). You can switch off and on as needed, while in motion.
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