Thinking of my next oil change on our '13 Focus that I have owned since new. Always had dealer oil changes since new because they were part of the purchase. Motorcraft syn blend 5W20 over its 110K mile life with Motorcraft filters. No notable oil consumption. Average OCI has been about 6500 miles. Going to try the Wallyworld oil and stick with Motorcraft filter. Any reason to use the Supertech syn high mileage over their regular syn 5W20?