As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN CRUISE, FLIGHT CREW NR 2 ENGINE STARTED TO VIBRATE AND PROP RPM WENT TO NEAR ZERO, ENGINE WAS SHUTDOWN AND EMERGENCY CHECK LIST PERFORMED. EMERGENCY DECLARED AND AN UNEVENTFUL LANDING WAS MADE. MX FOUND OIL ALL OVER INSIDE THE EXHAUST TAIL PIPE, CHECKED OIL FILTER AND SCAVENGE SCREENS AND FOUND NO METAL CONTAMINATION. ENGINE IS BEING REMOVED AND REPLACED WITH A SERVICEABLE ENGINE.