As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 1 ENGINE OIL QUANTITY AND PRESSURE BEGAN TO DECREASE DURING CRUISE. THE ENGINE WAS SHUTDOWN AS A PRECAUTIONARY MEASURE AND THE AIRCRAFT WAS DIVERTED WHERE IT LANDED WITHOUT INCIDENT. THE STARTER SIGHT GLASS HOUSING WAS FOUND SHEARED. THE NR 1 ENGINE STARTER WAS REMOVED AND REPLACED AND OPERATIONAL CHECKS WERE GOOD.