This is a 2nd OCI from a 2014 Mazda 6 with 9995 miles on the ODO. Dealer repaired (re-sealed) a front engine gasket leak and oil changed at ~4K miles. I found an ear plug in my drain pan. -Not sure where the other ear plug is or who drop them in a brand new engine. Oh well, the filter seems to be well made. I have a Fram TG6607 on it now but will probably go back to OEM on next OCI.