Forum Discussion
Dirtpig
Apr 18, 2016Explorer
You will be fine with your duramax. Do not attempt to do 110-120km/hr up or down the steeper grades. Keep your speed to 90-100km/hr and you will be safe and let the diesel engine and transmission keep your speed where u want it or slow you down. Don't ride your brakes. Most of the vehicles you will pass on side of road overheated because they thought they could do the speed limit up hill loaded down.
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