What is the correct way to break in a new engine. I read somewhere the best way was hard driving. There was an article about this with dynos to prove that every engine that was driven hard during break in, came out with more power than the exact same engine that was broken in gently. The reason I believe was given was because the directions for break in have not been updated and the use of new oils nowadays allow for this. Is there anyone that can shed some light on this?