Narrative:

During a position leg with no passengers onboard; I executed a precautionary shut down of left engine due to odor; vibration and low oil pressure indications. Saw red oil pressure indications at cruise (low oil pressure) and pulled back left engine to idle. Felt a bigger vibration and heard a noise as power was reduced. Completed the precautionary shutdown checklist; notified ATC and diverted to ZZZ.

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Original NASA ASRS Text

Title: A Citation pilot shut down the left engine and diverted to a nearby airport due to low oil pressure; vibration and a suspicious odor.

Narrative: During a position leg with no passengers onboard; I executed a precautionary shut down of left engine due to odor; vibration and low oil pressure indications. Saw red oil pressure indications at cruise (low oil pressure) and pulled back left engine to idle. Felt a bigger vibration and heard a noise as power was reduced. Completed the precautionary shutdown checklist; notified ATC and diverted to ZZZ.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.