One more question, gentlemen... We have to get the trailer to the dealer for some warranty work. It's about 60 miles one way, gradually downhill from 3000' elevation to less than 100'. They will ...
Interesting... while many manufactures do not recommend towing a trailer the first 500 miles, and then at reduced speed the next 500... the 2014 F-150 manual says "Do not tow during the first 1000 miles".
That's a little more black and white than a recommendation.
On a side note are there other owners manuals that reduce GCWR at elevation? The 2014 F-150 manual reduces the GCWR 2%/1000 feet. I haven't seen that before.