Truck handled it very well. It was mostly smooth driving on I90 so it was in cruise between 60 and 70 mph the whole way and only popped out of OD a few times. I took corners very slow...that is the only time I noticed it much. It didn't hardly phase the engine. In a few spots where I hit bumps I could tell the rear end was a lot softer than normal. Overall very successful...I won't hesitate to use it like that again.

 

Great job. Thanks for taking the time to take pics and post them.

You mpg looks normal. You'll always get better mpg when you drive 99% freeway, especially if you keep it under 70 with moderate acceleration and deceleration.