A CL65 AT FL300 DIVERTED DUE TO #2 ENG LOW PRESSURE INTERMITTENT WARNING. ON APCH WARNING ON STEADY. SHUT DOWN ENG ON TAXI TO GATE. CAUSED BY ENG OIL SEAL FAILURE.

Narrative

WE WERE ENRTE TO ZZZ1 AT FL300 WHEN WE RECEIVED A LOW ENG OIL PRESSURE WARNING ON ENG #2. THE WARNING LASTED ONLY ABOUT 2 SECONDS; AND THEN WENT OUT. WE OBSERVED THE ENG OIL PRESSURE TO BE VARYING SIGNIFICANTLY; BUT STILL IN THE LOW GREEN RANGE. WE PERFORMED THE EMER CHKLISTS; FOR LOW OIL PRESSURE AND FOR FLUCTUATING ENG OIL PRESSURE. ALL OTHER INDICATIONS WERE NORMAL. I CONTACTED OUR MAINT CTL AND DISPATCHER VIA COMMERCIAL RADIO PATCH. WE DECIDED THAT A PRECAUTIONARY LNDG AT ZZZ WAS THE BEST COURSE OF ACTION. WE INFORMED ATC; AND WERE CLRED DIRECTLY TO THE ZZZ ARPT. I INFORMED THE FLT ATTENDANT; THE PAX; AND ZZZ STATION OPS OF OUR SITUATION AND OUR INTENTIONS. DURING DSCNT INTO ZZZ; OIL PRESSURE WAS STABLE IN THE LOW GREEN RANGE WITH NO OIL PRESSURE WARNING; AND THE ENG OPERATING NORMALLY. ON SHORT FINAL; THE ENG OIL PRESSURE WARNING WENT OFF AGAIN; BUT STAYED ON THIS TIME. THE ENG CONTINUED TO PERFORM NORMALLY. THE FO (PF) MADE A VERY NICE; UNEVENTFUL LNDG. AS WE CLRED THE RWY ONTO THE TXWY; THE ENG OIL PRESSURE INDICATION WAS STILL ILLUMINATED FOR THE #2 ENG; SO WE SHUT DOWN THE #2 ENG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE LOW OIL PRESSURE WAS A FAILED ENG OIL SEAL. THE IDENTITY OF THE SEAL AND LOCATION ON THE ENG IS UNKNOWN. THE ENG WAS A GENERAL ELECTRIC CF34-3A1.