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Depends on the specs of your truck. I drive one on the side, its a 99 with a 525 N14, 18 OD, and 3.73 rears... coming back, I have to go down Floyd Hill, which is six miles at 6 percent... I'm typically in 6 low when I descend it, between 79 - 81k.

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8y ago
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9y ago

4gear

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Q: When driving a tractor-trailer which gear should you use when driving on a 6 percent downgrade and the weight of your vehicle is 76 thousand pounds?
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