As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) 371 HOURS AFTER OVERHAUL. METAL WAS OBSERVED IN THE OIL FILTER. ENGINE REMOVED, DISMANTLED, AND INSPECTED. CORROSION FOUND ON RODS AND CRANKSHAFT. ENGINE APPEARED TO HAVE NEVER RUN WARM ENOUGH TO BURN THE WATER OUT OF THE OIL. LACK OF ANY MARKS ON THE VERNATHERM VALVE CONFIRMS THE VALVE NEVER CLOSED TO ROUTE OIL TO COOLER. AIRCRAFT TEST FLOWN AFTER REPAIR. OIL TEMP GAUGE READ 160 DEG IN CRUISE.