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 > just saw my 1st 2020 F-350's

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Cummins12V98

on the road

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Posted: 01/11/20 07:04pm Link  |  Quote  |  Print  |  Notify Moderator

To use the advertised “TOWING” numbers you need to be towing a triple axle 5er with 15% pin.


2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
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"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

larry barnhart

wenatchee. wa usa

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Posted: 01/11/20 08:33pm Link  |  Quote  |  Print  |  Notify Moderator

I have read guys with the new 2020 ford 10 speed running hot on the trannie.


I saw a 2020 chev coming my way as I was walking and the grill looked ok but it wasn't a 3500.

chevman


chevman
2001 35 ft avalon alpenlite RK
2005 3500 2wd duramax CC dually
prodigy
easyrider/reese airhitch
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steve-n-vicki

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Posted: 01/15/20 09:03pm Link  |  Quote  |  Print  |  Notify Moderator

The truck I drove, the transmission quickly came up to 192° But it stabilized there

ford truck guy

Pennsylvania

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Posted: 01/17/20 02:33pm Link  |  Quote  |  Print  |  Notify Moderator

SO....

It happened. and it's my wife's fault [emoticon]


Me-Her-the kids
2015 Ford F350 SD 6.7
2020Redwood 3991RD Garnet


Cummins12V98

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Posted: 01/17/20 03:07pm Link  |  Quote  |  Print  |  Notify Moderator

steve-n-vicki wrote:

The truck I drove, the transmission quickly came up to 192° But it stabilized there


Seems on the high side. Was that in City driving?

4x4ord

Alberta

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Posted: 01/17/20 04:39pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

steve-n-vicki wrote:

The truck I drove, the transmission quickly came up to 192° But it stabilized there


Seems on the high side. Was that in City driving?


Depends how you look at it. Having it run at 192 degrees when it's not working could be a good idea. Hot thin oil could provide for better efficiency. The engine coolant might be heating the transmission oil up when the trucks not working.


2017 F350 SRW Platinum short box 4x4.
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Cummins12V98

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Posted: 01/17/20 05:09pm Link  |  Quote  |  Print  |  Notify Moderator

Trans fluid life is directly related to fluid temps. I would like to hear the driving type at that temp.

Bionic Man

Colorado

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Posted: 01/17/20 05:42pm Link  |  Quote  |  Print  |  Notify Moderator

Since I experienced high transmission temps on my Yukon, I've been paying a lot more attention to them.

I travel for work, and rent a car at least once a week, sometimes up to 3 different cars in a week. I'm in the habit of looking at transmission temps as I'm driving on the interstate, and temps from 190* - 210* are the norm. True for the Mopar ZF 8 speeds. True for the GM SUVs. That is what my new Expedition runs. Certainly true on my Cummins. True for just about every vehicle I have paid attention to.


2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010

4x4ord

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Posted: 01/17/20 06:00pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

Trans fluid life is directly related to fluid temps. I would like to hear the driving type at that temp.



Does transmission oil last longer at 160F than at 192?

ksss

Eastern Idaho

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Posted: 01/17/20 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

4x4ord wrote:

Cummins12V98 wrote:

Trans fluid life is directly related to fluid temps. I would like to hear the driving type at that temp.



Does transmission oil last longer at 160F than at 192?


Amsoil used to have graph that showed tranny fluid life at different temps. I don't know that is that drastic going from 160 to 192 but I think the moral of the story is the hotter the fluid the less longer it lasts.


2006 GMC 3500 CC 4X4 DRW D/A
2013 Fuzion 342
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2012 Sea Doo GTX 155
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