A C421 PILOT SHUT AN ENG DOWN DUE TO AN OIL LEAK BUT DID NOT DECLARE AN EMER. THE ACFT DIVERTED TO A NEARBY ARPT.

Narrative

CLBING THROUGH 11000 FT MSL ENRTE FROM ZZZ1 TO ZZZ2 I NOTICED AN OIL LEAK ON THE R ENG; I INITIALLY REDUCED PWR AND MONITORED THE ENG WHILE DETERMINING THE BEST ACTION. I REQUESTED 9000 FT THEN 7000 FT TO HELP MAINTAIN A SAFE SPD THEN DETERMINED I SHOULD SHUT DOWN THE ENG. I NOTIFIED CTR; AND REQUESTED A DIVERSION TO ZZZ3. (THE ACFT WAS FLYING WITH GOOD CTL AND A SAFE AIRSPD AND ZZZ3 SEEMED TO BE THE BEST PLACE TO BE ABLE TO MAKE REPAIRS AND GET ALTERNATE TRANSPORTATION TO ZZZ2.) I WAS CLRED TO 6000 FT AND THEN SWITCHED TO ZZZ3 APCH. I INFORMED THEM OF THE SITUATION AND TOLD THEM IT WAS NOT AN EMER AND THE ACFT WAS FLYING OK; BUT SLOW DUE TO THE SHUTDOWN. I WAS SWITCHED TO A DISCRETE FREQ AND AFTER DISCUSSION WITH THE LCL APCH SUPVR WE DETERMINED THAT THE BEST COURSE OF ACTION WAS TO LAND ON RWY XXL SO I COULD USE THE HIGH SPD TXWY EXIT TO AID IN EXITING THE RWY AND TAXI. I REQUESTED THAT A TUG STAND BY IN CASE I COULD NOT TAXI OFF THE RWY. I PLANNED THE APCH TO ALLOW TIME TO RETRIM THE ACFT AFTER PWR REDUCTION TO AID IN DIRECTIONAL CTL ON FINAL AND TAXI AFTER LNDG. I MADE AN UNEVENTFUL LNDG AND WAS ABLE TO TAXI VIA THE HIGH SPD TXWY TO THE RAMP WHERE I SHUT DOWN THE RUNNING ENG AND EXITED THE ACFT. MECHS INSPECTED THE ACFT AND DETERMINED IT WAS NOT REPAIRABLE THAT NIGHT SO WE PARKED THE ACFT FOR LATER REPAIR.