As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB-DURING CLIMB CREW REPORTED HIGH OIL TEMP AND SMOKE IN THE CABIN. PERFORMED AIR RETURN TO ATL. MTC FOUND OIL IN 2.5 BLEED PORTS AND TAILPIPE, ALSO DRAINED LARGE QUANTITY OF OIL FROM THE GEARBOX. T/S PER FIM 21-00-01, ENGINE AND RECIRC FILTERS CHANGED.