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Old 06-11-2014, 05:43 PM   #41
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Tow/haul engaged, cruise control off. Only use cruise control when unhooked or in the car.

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Old 06-11-2014, 06:05 PM   #42
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Originally Posted by Brother Les View Post
Someday is today, for tomorrow will never come.
sooooo true lol btw i saw 6.0 tans cooler in your sig line.....nice choice!!

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Old 06-12-2014, 09:14 PM   #43
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I put mine on Tow/Haul. When on flat ground it usually drops into 6th gear on the freeway. Pulling a heavy 40' 5'er
2012 F350 SRW Powerstroke
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Old 06-12-2014, 09:24 PM   #44
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13 days out cruise control as much as I could with T/H on onboard read out 9.4 MPG @ 65-70 MPH.

Pencil it out tomorrow but the diff will not matter.
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
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Old 06-12-2014, 10:27 PM   #45
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Tow/haul engaged (ALWAYS when hooked up!) Cruise control always when towing flat, never in hilly areas
Bob & Anne-Marie [BamaBob & 6 Actual]
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Old 06-12-2014, 10:48 PM   #46
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Ram 3500 Cummins, tow-haul and engine brake on and I use the cruise as much as possible especially in hills with no traffic as the truck will maintain the speed better by using the engine brake and allowing me not use much brake. IMO, people should use cruise more often for all driving as you will get better fuel economy and traffic flows better if you don't have yahoos that can't keep their speed constant with their foot.
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Old 06-12-2014, 10:55 PM   #47
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I use the Cruise when I can. Everywhere is uphill from home as we live in the coastal ranges of Central Cali. Always tow with overdrive off no matter what. Mileage bites but that is the way it goes. Usually cruise from 59mph to 62mph. Get about 9mpg when towing. Figure 8mpg when trying to guestimate the amount of fuel needed for a trip.
2004 F150 4.6 Griffin tuned
2010 Wildwood 24FBS
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Old 06-13-2014, 12:16 AM   #48
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I put my Duramax in D, press the T/H button and let the Allison figure it out. If I'm in hilly country or a two lane/secondary road I don't use cruise control. If I'm pulling a significant grade, I will usually restrict the transmission to 5th gear if the RPMs drop much below 1700.
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Old 06-13-2014, 12:47 AM   #49
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It pulls so well that if I don't set the cruise in clear areas then I'll end up keeping pace with traffic at 80mph.

Seriously, I do set it for that reason, I'm also a bit more judicious about how tight traffic gets before I turn it off.
Now-2014 Sierra 346RETS 5er BUB
Then-2002 Keystone Springdale 286RLDS TT

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Old 06-13-2014, 12:58 AM   #50
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For Info:

Just drove from central Fla to Norcal in 4 days in our 08 Ram 3500 Cummins 6.7 L with a camper shell and loaded with 2 cats and wife's crafts stuff - Cat scaled 8860 lbs with no trlr. Ocala - Vicksburg - Amarillo - Kingman - Lakeport (an hour north of Napa Valley).

Always use cruise on open road. Use tow/haul in hilly areas (always use it with trailer).

MPG on open flat interstates going 68 - 74 MPH calculated at near 19; truck display was 20.5 +/-.


2011 Rockwood Windjammer 2102W
2008 Ram Laramie 3500 Megacab 4x4 Cummins 6.7L Turbo Diesel
(the max loaded 2006 F150 5.4L V8 would only go 55 MPH Westbound on I-80 in Wyoming)
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