Just wanted to share... The User Guide says there isn't a break in period... but the Owner's manual says this about a break in period FOR TOWING:
-- Do not tow a trailer at all during the first 500 miles (805 km) the new vehicle is driven. The engine, axle or other parts could be damaged.
-- Then, during the first 500 miles (805 km) that a trailer is towed, do not drive over 50 mph (80 km/h) and do not make starts at full throttle. This helps the engine and other parts of the vehicle wear in at the heavier loads.
Pretty sad for me, as I am on 150 Miles and I was going to grab family at the airport and was going to take a trailer with me to put the luggage in.