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Old 02-05-2016, 01:36 PM   #41
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I generally use the cruise but also use the accelerator to pick up a few mph before hitting a hill if it looks likely that it won't be able to maintain speed all the way to the top without shifting out of top gear. If the hill is steep enough, by the time the cruise figures out it needs to downshift, the speed has dropped enough that I would be annoyed if I were behind me. So I pick up a few mph approaching the hill so it will bleed off back to target just as I hit the top of the hill and it generally stays locked in OD all the way.

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Old 02-05-2016, 01:48 PM   #42
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I tow a 43' 5th wheel - about 16,000# with an F350 diesel dually. I find I get better mileage when towing with the cruise control off. Slight undulations on the "flats" will cause it to downshift a gear, and hills of course will cause the engine to try and rip its' guts out trying to maintain the set speed uphill. We are full-timers and cover maybe 15,000 miles per year throughout North America. I find my right foot is a lot better in regulating speeds with my rig.

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Old 02-05-2016, 02:12 PM   #43
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I use it from time to time depending on conditions...terrain and traffic for ex.....Nice to change your sitting position and give your foot a rest............J
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Old 02-05-2016, 03:03 PM   #44
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Same as this.

Originally Posted by Jim in Halifax View Post
I use it from time to time depending on conditions...terrain and traffic for ex.....
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Old 02-05-2016, 03:13 PM   #45
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Originally Posted by Mr. Dan View Post
Same as this.

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Old 02-05-2016, 03:28 PM   #46
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Average 6k plus mikes each year for the past 6. Always use cruise and tow haul. In hills and mountains always use exhaust brake to save disc brakes of tv and tt brakes. One thing I saw hinted at but not stated, was told never never use cruise in heavy rain or on roads with standing water pockets. If one drive wheel hits water pocket and other does not, cruise will most often favor the restricted wheel and speed up vehicle. Slip diff just adds to the issue. Great device to use in good road conditions. Safe trailering!
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Old 02-05-2016, 03:57 PM   #47
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Don't know what you're driving

My Toyota Sienna's manual specifies to never use the cruise control while towing. Just my $.02 worth.
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Old 02-05-2016, 04:14 PM   #48
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I use it from the time I hit the freeway to when I get off on my F350 dully. Only way to drive long distance. If its good for the truckers then its good for me.
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Old 02-05-2016, 04:41 PM   #49
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I use it all the time on interstate, keeps me at my desired speed of 60-62mpr. I use the tow-haul and engine brake and just let the Cummins do its thing.
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Old 02-05-2016, 04:58 PM   #50
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Originally Posted by Total Loss View Post
I use it flats or downhills, in good conditions.
If the cruise is going to shift for me- I take it off. If it will hold a gear, I leave it on.
I hate when the computer shifts for me in cruise.
Personal preference.
I have never had to rebuild a tranny.

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