Set the cruise at 55 and let it squat and get I use to do it when I was dong the 5th wheel with the Dodge Cummins and boy they would get out your way when she came screaming up the hill.
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Retired Navy Submariner
2014 Itasca Sunstar 35F; 5 Star tuned; 2014 Jeep Cherokee TrailHawk
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I went to Freightliner school in May and they taught us the transmission is set to down shift at 1750 rpms for everyday driving. In the mountains you have to manually down shift your transmission around 1900 rpms like bbeane said. We came back through the Smokies and had no problems at all except for the slow traffic in front of us. We have a 42 ft, pull a 3000 lb car with a 340 Cummins. The school was well worth the money!!
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Phillip Brown
2011 Cross Country Sportscoach
Benton AR