As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL QUANTITY LOW. AIRCRAFT DIVERTED TO KSFO WHEN READING 5 QTS. DURING ENGINE MOTORING, FOUND OIL TUBING LEAKING AT LOWER CASE. BORESCOPE FOUND EXCESSIVE OIL LEAKAGE UPPER QUADRANT WITH DAMAGE TO OIL LINE. ENGINE CHANGE UNDER WAY.