What was found
DURING FLIGHT, PILOT EXPERIENCED SUDDEN LOSS OF POWER AND ENGINE ROUGHNESS. AN UNEVENTFUL AIRPORT LANDING WAS MADE. INSPECTION BY MAINTENANCE PERSONNEL REVEALED NR 3 CYLINDER INTAKE PUSHROD BENT. OIL ADDITIVE, LW16702, ADDED 2 HOURS PREVIOUSLY. ENGINE MAJOR OVERHAULED 2 HOURS PREVIOUSLY.