I'll be heading to the Colorado and Wyoming this summer, and will be traveling along the Continental Divide, or as close as the roads allow. I'll have the camper in my photo loaded, that's maybe around 6,000 lbs, but will not be towing the boat.

How will the 6.4 handle the altitude changes? Will the multitude of on-board computers figure out what to do and make the necessary adjustments? I remember when my '68 Jeep and '69 Land Rover were out there- needed carb adjustments every couple of thousand feet. But those were carbs and there were no computers.

Thanks in advance.

 

Do not even give it a second thought. I have pulled my 5er up and over 11,000 feet, Monarch Pass, and never a hiccup 3 different times. Wolf Creek pass was a breeze. In fact they have the passing lane on each side going up and we passed most everything. I don't know how true it is, but an engine with 2 turbos such as the 6.4 is uneffected by altitude. I know it seemed true in my experience. I have also driven to the Top of Pikes Pike (not towing obviously, which as you know is 14,000 plus and again not even close to an issue.

 

I have towed with mine threw Colorado and even had mine up Pikes Peak without any issues at all.

 

Thanks Gearitis and Senix, that's what I was hoping to hear.

 

My truck tows my boat like it isn't even back there through the hills. Gas mileage will go down slightly but other than that, no issues at all.