jalichty
Lander, Wyoming 82520
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Joined: 09/18/2003
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Just got a new TV with a little over 300 miles on it, dealer to dealer trade. It's a Durmax/Allison combo and I was wondering how many miles I should put on it before towing my boat? I looked in the manual and didn't see anything yet. Just thought I would ask here.
John A. Lichty
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2Macs
Indianapolis, IN
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Joined: 04/30/2004
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Start towing the boat now. The Duramax/Allison will handle it with no problem even if its new. Your TV is made for towing from the getgo.
I have a Duramax/Allison also and it worked well towing from the beginning.
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CND SuperCrew
SK, Canada
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Joined: 02/11/2005
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I believe for the Dmax there is a 800-1k km break in before they suggest you tow anything, it should be in the manual...
Ron, Lori and Autumn
TV 2012 F150 loaded XLT EB SuperCrew 7700GVWR Maxtow 6.5'
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2013 Colorado bound
2012- 4000km, 28 nights for the season 
2011- OR & CA done, 6800km in 3 weeks
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Ron Gratz
full time RVer
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Joined: 12/27/2003
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Manual says do not exceed 55 mph and do not tow a trailer for first 500 miles.
Ron
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Jim Cindy
Northcentral, PA
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X2 on 55 and 500 miles in my manual.
PBH Portable Beach House
2008 GMC 2500HD Duramax Allison 
2009 Cameo 34CK3
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skipnchar
Topeka or somewhere else
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Joined: 12/17/2003
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Every new truck I've owned say there is NO overall break in but they do recommend 500 miles on the differential to allow the gears to seat, before towing. Should be in your owners manual if you got one. If not find out what Chevy recommends from the dealer.
2011 F-150 HD Ecoboost 3.5 V6. 2550 payload, 17,100 GCVWR -
2004 F-150 HD (Traded after 80,000 towing miles)
2007 Rockwood 8314SS 34' travel trailer
US Govt survey shows three out of four people make up 75% of the total population
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ktmrfs
Portland, Oregon
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skipnchar wrote:Every new truck I've owned say there is NO overall break in but they do recommend 500 miles on the differential to allow the gears to seat, before towing. Should be in your owners manual if you got one. If not find out what Chevy recommends from the dealer.
x2. that was what my 04 duramax diesel manual recomended.
Unless things have changed, all the duramax engines are run on a dyno before being installed in the truck. Don't know for how long. I suspect the cummmins and ford diesels are also run before installation.
2011 Keystone Outback 295RE
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Fisherman
Angus, Ontario, Canada
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2Macs wrote:Start towing the boat now. The Duramax/Allison will handle it with no problem even if its new. Your TV is made for towing from the getgo.
I have a Duramax/Allison also and it worked well towing from the beginning.
It has more to do with the differential break in period than the engine/tx. Some people read, others speculate. Unfortunately procreation comes without reading otherwise Mother Nature would be able to weed out the bad genes over a couple generations.
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Ron Gratz
full time RVer
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Joined: 12/27/2003
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skipnchar wrote:Every new truck I've owned say there is NO overall break in but they do recommend 500 miles on the differential to allow the gears to seat, before towing. Should be in your owners manual if you got one.--- Guess you should check your owners manual.
The online 2011 F-150 OWNERS GUIDE states on Page 5:
BREAKING-IN YOUR VEHICLE
Your vehicle does not need an extensive break-in. Try not to drive continuously at the same speed for the first 1,000 miles (1,600 km) of
new vehicle operation. Vary your speed frequently in order to give the moving parts a chance to break in.
Drive your new vehicle at least 1,000 miles (1,600 km) before towing a trailer. For more detailed information about towing a trailer, refer to Trailer towing in the Tires, Wheels and Loading chapter.
(Underline added for emphasis)
Ron
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Cummins12V98
on the road
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With the Cummins it's "why do I have to wait to tow???? I don't care about those silly gears. Ok now hook me up to a huge trailer so I can go to work" Cummins are ready to tow out of the box!
2011 Ram Laramie Longhorn 3500 Dually Long Bed, Cummins 350/800 HO, Towin Machine
B&W Companion Hitch, Maghytec Trans and Rear Dif Covers, AMZ/OIL Top To Bottom
2007 1/2 Mobile Suites 36 SB3 27,000# Combined
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