As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, ON A RE-POSITION FIGHT WITH NO PAXS, THE CREW REPORTED AN OIL ODOR IN THE CABIN. THE CREW FOLLOWED PROCEDURES RETURNING & LANDED WITHOUT INCIDENT. AFTER SHUTDOWN A VISUAL INSPECTION OF THE RT ENG REVEALED TURBINE OIL IN THE INTAKE & EXHAUST AREAS. TROUBLESHOOTING IS CONTINUING. CORRECTIVE ACTION TO FOLLOW.