Recently I was told by 2 oil companies to run dino oil for at least 7000 miles before switching. The reason for this is their oils are so slick it would take forever for rings to seat in. These 2 oils companies are Royal Purple and Redline. I do believe my train of thinking is correct. Their friction modifiers are decreasing wear much more than other synthetics that say it's OK to put it in your new car right away without waiting and may come factory filled with it such as Mobil 1. What do you of my logic!