As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF THE CREW NOTICED OIL ODOR IN CABIN ONCE BLEEDS WERE SELECTED ON. THEY ELECTED TO RETURN TO THE DEPARTURE AIRPORT WHERE AN UNEVENTFUL LANDING WAS COMPLETED. BOTH ENGINES HAVE BEEN BORESCOPED AND APPEAR DRY. TROUBLESHOOTING IS ON-GOING.