Hey ya'll, I just bought a new 2013 silverado LTZ 1500 and I have 550 miles on it and I want to go on a fishing vacation. My question is this: The owners manual says the first 500 miles of towing should be at or below 50 mph. What happens if I tow at highway speeds since I'm going a few hundred miles? Will I totally destroy the drive train/engine? What do you think?