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Old 04-22-2016, 02:44 PM   #11
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sometimes cool

I was taught by several from the proving grounds to worry about cool downs only after long upgrades pulling or unloaded, or hottest days pulling hard. Run it at idle for 30 seconds to a minute and a half so things get a chance to cool off and stabilize. Otherwise, you leave the oil in a superheated turbine to cook and coke the oil. It all adds up over time. Does not take long to let circulation do its thing.
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Old 04-22-2016, 02:45 PM   #12
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Originally Posted by wicked1 View Post
When do you enable Exhaust Braking?

I am towing a Rockwood Roo loaded weight 5500, but not sure if it should be on all the time when to/haul is on or if it is just for heavy loads or steep hills?

Also after towing should the truck run for a few minutes to cool down, last time I drove a Diesel it was the 1990's so just wondering if I can just turn the key and go? And is it ok to just shutdown the truck for small trips?


2016 F350 SCREW SB 6.7 PS Diesel
2015 FR Rockwood Roo 23IKSS
I click mine on at the start of a trip, but as I understand, it does not work unless my speed less than 20 mph. I cannot tell if it is working or not, but all of my towing so far has been on flat terrain. I am anxious to hear the answer.
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Old 04-22-2016, 08:43 PM   #13
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As soon as you engage the tow/haul on the shifter the diesel brake is activated. You can disengage it with the switch on the dash, but I just let it do its thing. As far as cool down goes I wouldn't worry about it.
I've never heard of that before, but I don't own a Ford, so really don't know. On my truck, the exhaust brake doesn't come on when in tow/haul mode unless you manually turn it on. I always have the exhaust brake on and always drive in tow/haul mode.
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Old 04-22-2016, 08:49 PM   #14
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Are you sure about that it activated with the tow haul mode. Mine has light on the dash that shows if the exhaust brake is on or off and if I turn on Tow Haul Mode the light doesn't lite. I have to push the button on the dash for the exhaust brake light to come on.
Not with the ECM programming I have . It is off unless I turn the exhaust brake switch on.
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Old 04-22-2016, 08:53 PM   #15
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I watched the Youtube...............but...........what would be the benefit in a GMC of BOTH the exhaust brake AND the tow/haul being on? Downshifting isn't going to occur twice........

??

What am I missing??
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Old 04-22-2016, 10:05 PM   #16
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I almost always set a 4-minute timer on my cell phone when I pull off the road from a long tow. Here's why (per the Ford diesel supplement):

"To prolong engine life (especially after extended high speed, high ambient temperature, or high GVW/GCW operation, such as heavy loads or heavy trailers), it is recommended that a hot engine be idled for 3-5 minutes. This allows the turbocharged engine to cool down."

As for the Integrated Engine Braking (again from the Ford diesel supplement):

"This feature increases engine braking at higher engine speeds to provide better grade descent control with less brake and transmission wear and tear. This feature is integrated with the tow/haul mode feature. When tow/haul mode is switched on, the integrated engine braking feature will also be active."

If my 5th wheel is in tow, I have the tow/haul mode set to on.

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Old 04-22-2016, 10:47 PM   #17
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Originally Posted by B and B View Post
Not with the ECM programming I have . It is off unless I turn the exhaust brake switch on.
Same here and this what says for 2015 owners manual.

"GENERAL INFORMATION
Diesel Engine Braking
This feature increases engine braking at
higher engine speeds to provide better
grade descent control with less brake and
transmission wear and tear.

Press the button located on the
switch bank next to the audio
unit to switch the system on or off

A light will illuminate in the instrument
cluster when this feature is switched on.
You can use this feature with tow/haul to
provide further increased engine braking."


My light is in the center panel just below the word "Reset" it does not come on in tow haul mode unless you press the button. You can tell the difference between it being on (light lite) and when off. I have heard they improved the exhaust brake in the 2015 models.
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Old 04-22-2016, 10:54 PM   #18
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Quote:
Originally Posted by CWSWine View Post
Same here and this what says for 2015 owners manual.

"GENERAL INFORMATION
Diesel Engine Braking
This feature increases engine braking at
higher engine speeds to provide better
grade descent control with less brake and
transmission wear and tear.

Press the button located on the
switch bank next to the audio
unit to switch the system on or off

A light will illuminate in the instrument
cluster when this feature is switched on.
You can use this feature with tow/haul to
provide further increased engine braking."


My light is in the center panel just below the word "Reset" it is does not come on in tow haul mode unless you press the button. You can tell the difference between it being on (light lite) and when off. I have heard they improved the exhaust brake in the 2015 models.
I guess that is a new feature/option in the 2015 models. I don't have that switch or light on my 2014 model.
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Old 04-22-2016, 11:40 PM   #19
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1 minute warm up at idle and 1 minute cooldown at idle for normal driving.

5 minute idle cooldown for towing no exceptions especially at highway speeds.

I have 157k miles on a turbo'd diesel vehicle with original turbo and most folks lose their turbo on this vehicle at 80-100k miles. Have 96k miles on my other turbo diesel and it runs like new with no radial or axial play.

Here is a good post on the topic: Turbo Cool Down - Diesel Forum - TheDieselStop.com
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Old 04-23-2016, 12:12 AM   #20
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Quote:
Originally Posted by wicked1 View Post
When do you enable Exhaust Braking?

I am towing a Rockwood Roo loaded weight 5500, but not sure if it should be on all the time when to/haul is on or if it is just for heavy loads or steep hills?

Also after towing should the truck run for a few minutes to cool down, last time I drove a Diesel it was the 1990's so just wondering if I can just turn the key and go? And is it ok to just shutdown the truck for small trips?


2016 F350 SCREW SB 6.7 PS Diesel
2015 FR Rockwood Roo 23IKSS
I use the exhaust brake even if I am not towing (if I remember to turn it on), and I always use it and tow/haul mode when towing. A few times last summer in the mountains (S Dakota, Wyoming, Idaho, Utah, Colorado, New Mexico) I used the gear lock out feature to prevent it from going into 6th gear.

I haven't seen anyone address our question "Can I just turn on the key and go?" Even though the new Fords sound like a gas engine, they still have glow plugs, and you should always wait to start until the indicator is off.

AL
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