As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFO TO MX ON DESCENT PASSING 5000' FAINT WET SOCK SMELL THROUGH AIR GASPRES. WENT AWAY AFTER A FEW MIN. FOUND ENG 1 OVER SERVICED BY APPROX 3 QTS. REMOVED EXCESS OIL FROM TANK. OPERATED ENG @ IDLE FOR FOR APPROX 5 MIN. NO SMELL. OK FOR SVC.