This is a big sigh of relief for me. Last two uoas as you can see we're high in copper and I had no idea why. I recently changed my oil pan out that had been cracked to [censored] and back and held together with JB weld. The JB weld was coming apart inside the pan apparently which is the only thing I can attribute the copper to now. Very happy with these results. Refilled with Rotella t4 15w40 and I'll check that out next time.