Brief
Oil changes. Oil type. Oil weight. Hocus-pocus. Every single auto forum has questions from users about oil; the questions are all over the place and are usually flame-fights between people that have no idea what oil does, and fan-boys/girls of a specific brand or philosophy.
Regardless of where you stand on the oil argument, check out this YouTube short-- If you subscribe to the reasoning that you don't need to change your modern, long-life, high detergent oil, you may want to reconsider that thought!