UOA is from my '07 Pacifica (4.0L V-6) using Castrol Edge (European Formula) 0w-30 and Pentius UFXL filter, interval was 7463 miles. The oil is API SL & ACEA A3/B3 rated, made in Belgium. Oil was put in the car in early March. Vehicle use is about 60% short trips of < 5 miles, 40% mixed highway/city driving. Air filter was installed about 15k ago; I'm at a loss to explain the high silicon as I don't live in a dusty environment. By the amount of TBN left in the oil, I should have kept it in much longer. Additive pack looks a little underwhelming. Will probably increase to 10k intervals. Switched to Mobil1 EP 0w-20 and Fram Ultra for the next OCI. Any thoughts / input / suggestions / etc are welcome.