As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER SHUTDOWN, SMOKE WAS NOTICED COMING FROM BOTH ENGINE EXHAUST STACKS ON THE RIGHT ENGINE. MAINTENANCE INSPECTED THE RIGHT ENGINE WITH NO DEFECTS NOTED. ENGINE OIL WAS SERVICED. PERFORMED ENGINE RUNS AT DIFFERENT POWER SETTINGS WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.