I just got analysis from Blackstone on the first oil change on my 2013 Fiesta SE that I bought brand new last year.They report "silicon isn't the only thing reading high; iron, aluminum, and copper are too. But that's nothing to be concerned about. Silicon is from factory sealers and the metals are from new parts wearing in. Everything should drop steadily over the next oil change or two until your engine looks more like average for this type of Ford engine. The TBN is good at 2.8. So far, looking good! Try 8K miles." I changed oil at 7200 miles. Mobile 1. I intended to change at 5000 miles. The irst change was scheduled to be at 10,000 miles. I am now thinking it would have been best to do the first change at 500 or 1000 miles as that is when the most metal would be in circulation due to break in. Should I maybe trade it on another as they are the same great deal on a new one. I would really like to get at least 300,000 miles on the engine, but am concerned about the above average amount of metals indicated in the report.