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Old 07-29-2021, 08:07 AM   #21
rlh1957
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It may be rated to tow that weight and you might be able to match all the combined and total gross weights on paper… question is still, should you?

On flat land all the numbers may work, go to the Smokies, Appalachian or try Rockies or Sierra and you’ll get a shock!
Engine lugs, transmission heats up, gears shift down and gassers running high rpm’s.
That said some people report success and their rig can tow a tank successfully.
Safety and satisfaction is your goal.
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Old 07-29-2021, 08:07 AM   #22
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Originally Posted by KimNTerry View Post
I reduced the speed and downshifted to keep the truck in the power band and keep moving air over the engine. Knowing where the power band is and driving the truck to keep it in the power band makes all the difference on the eco boost.
This is the key! I rarely see people talk about this. This one of those "Operating the vehicle rather than Driving it" scenarios mentioned by another poster above.

You have to find the RPM range for each gear and stay within that range, even if it means slowly dropping down to 1st gear going 10mph. Even if you're revving the engine more than you like, it is less detrimental than the lugging and knocking.

Years ago, our 5.4 Expedition dragged the toy hauler over Monitor Pass after my bonehead reroute. She was thirsty, slow, singing, and warm but made it over fine because I tried to keep the engine in the power.

I like that TFH channel. Realistic testing of the trucks and honest comparisons/opinions it seems.
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Old 07-29-2021, 12:42 PM   #23
Ken / Claudia
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The last post is SO true. When your working that (any) engine hard keep the RPMs in the power zone. Shift the auto transmission into the right gear.
From what I see during my travels and past job. Most think the vehicle has 1 gear. They drive up and lug the engine, going down they keep a foot on the brakes.
Even explaining that to my wife, she won't shift gears because she only drives her car. I down shifted her car on a steep down grade. She asked why I did that. She says that's what brakes are for. I cannot win.
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Old 07-29-2021, 01:28 PM   #24
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Here I was, thinking I was OK b/c I own a 2019 F250 with the 6.7L Power Stroke diesel--my first diesel, towing our first RV--and then you folks start talking about the power zone. I admit ignorance on this one. I did a little quick research and see that rated peak torque is 935 lb-ft @ 1800 RPM. So is that the center of the power zone? BTW when we went to Asheville NC this winter (the only mts we've driven thus far), we encountered some significant grades (=/> 8%) and the truck didn't seem to break into much of a sweat @ 60-65 mph max. Out 36-ft TT probably weighed around 9500 lb fully loaded.
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Old 07-29-2021, 01:51 PM   #25
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Originally Posted by brodavefla View Post
Here I was, thinking I was OK b/c I own a 2019 F250 with the 6.7L Power Stroke diesel--my first diesel, towing our first RV--and then you folks start talking about the power zone. I admit ignorance on this one. I did a little quick research and see that rated peak torque is 935 lb-ft @ 1800 RPM. So is that the center of the power zone? BTW when we went to Asheville NC this winter (the only mts we've driven thus far), we encountered some significant grades (=/> 8%) and the truck didn't seem to break into much of a sweat @ 60-65 mph max. Out 36-ft TT probably weighed around 9500 lb fully loaded.
The diesels have much more torque and can maintain the rpms on a grade most of the time…if your rpms start falling and the engine is struggling that’s when you would downshift if it didn’t kick into a lower gear itself

Most of this discussion was about gas engines
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Old 08-02-2021, 02:32 PM   #26
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Quote from #4

("In a normally aspirated engine (Not turbocharged or supercharged) the reduced air volume will cause the engine controls to deliver less fuel to maintain the air/fuel ratio. This lean fuel mix creats more heat. The anti knock sensors will reduce ipower even further to prevent detonation (us old folks remember engine "ping" under heavy load) from hlowing pistons apart.")

I don't know where you studied Automotive technology, but this is factually untrue.
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