As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FOLLOWING ENGINE START, FLIGHT CREW NOTICED THE ODOR OF OIL IN THE FLIGHT COMPARTMENT AND SHUTDOWN THE ENGINES FOR INVESTIGATION. ENGINES AND BLEED AIR DUCTS INSPECTED WITH NO CONTAMINATION NOTED. ENGINE NR 1 DISCOVERED TO BE OVER-SERVICED WITH OIL. OIL LEVEL CHECKED SERVICEABLE. ENGINE RUNS CARRIED OUT WITH NO FURTHER ODOR EVIDENT AND THE ACFT WAS SUBSEQUENTLY RETURNED TO SERVICE.