IOE we use the tow/haul mode and depending on the length of the grade, I will actually downshift one gear to hold the speed I am attempting to maintain. Normally that is about 55 mph. As the speed moves towards 60, I will brake taking the speed down under 55. I don't have to wait on the shift, I already did it. I am not going to burnout our brakes because only jabbing them periodically. Done that across country 4 times, down the Grapevine, through Montana/Wyoming/Idaho twice, up and down the east coast from Maine to Florida, up and down Monteagle, and on I77 through Virginia. Total of 67k miles in 5 years. Still got brakes and never been close to runaway.
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US Army Retired - Loving The Road Trip
Challenger 37TB
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