As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE OIL TEMPERATURE INDICATED 140 DEGREES FOR 15 MINUTES; THEN WENT TO 150 DEGREES THROTTLE IDLE, ALL OTHER PARAMETERS NORMAL, PERFORMED IN FLIGHT ENGINE SHUTDOWN CHECKLIST. WITH NR 1 ENGINE SHUTDOWN, OIL PRESSURE AT 20 PSI AND TEMPERATURE 60 DEGREES WHILE WINDMILLING 0700. REMOVED AND REPLACED FOWARD OIL HEAT EXCHANGER NR 1 ENGINE IAW MM 73-11-0. ACCOMPLISHED ENGINE RUN IAW DC-8 MM 71-00. OPS AND LEAK CHECKED OK.