Again, the jack is fine for an emergency, not for common maintenance. A floor jack is the only jack I'd use for normal maintenance (tire rotations, repairs, etc) combined with jack stands. The factory scissor jack is good enough for a quick tire change on the side of the road, instead of dragging around a 40lbs floor jack in the bed all of the time. The bottle jack is another compact substitute, but I don't really value one much over the other, either can fail. I can't imagine that Ford (or any car company) would provide a jack that wasn't rated to lift the heaviest corner of a factory truck, with plenty of margin to spare.