As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE IAH-LAX, THE NR 4 ENGINE WAS SHUTDOWN DUE TO OIL FILTER BYPASS LIGHT, RISING OIL TEMPERATURE AND DECREASING OIL QUANTITY. CREW FOLLOWED COCKPIT OPERATING MANUAL AND RETURNED FLIGHT TO IAH WITHOUT FURTHER INCIDENTS. MAINTENANCE REPLACED THE NR 4 ENGINE AND TEST WAS NORMAL.