As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED LEFT ENGINE OIL LEAK. FURTHER INSPECTION REVEALED THE WASTEGATE OIL INLET LINE WAS LOOSE AT THE WASTEGATE OIL INLET BOSS. IT WAS DETERMINED THAT THE THREADS OF THE BOSS HAD FAILED. SUBMITTER RECOMMENDED MORE DETAILED INSPECTION OF WASTEGATE OIL LINES AND FITTINGS AT PERIODIC AND ROUTINE INSPECTIONS.