As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED TO HND FOR LEFT ENGINE OIL QUANTITY DECREASED TO ZERO WITH STABLE TEMPERATURE AND PRESSURE. RIGHT ENGINE ALSO HAD OIL QUANTITY DECREASING WITH STABLE TEMPERATURE AND PRESSURE. REPLACED BOTH LEFT AND RIGHT ENGINE AIR OIL HEAT EXCHANGER FOR LEAKING.(8439433) (AIRCRAFT GROUNDED)