As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED, OIL FUMES IN THE CABIN WHEN THE LEFT ENGINE FLOW IS TURNED ON. UPON INVESTIGATION MAINTENANCE FOUND THE LEFT COOLING TURBINE OVERSERVICED. EXCESSIVE OIL WAS DRAINED FROM THE ACM AND THE AIRCRAFT WAS RELEASED FOR SERVICE.