Narrative:

We departed with two passengers. Upon engine start engine oil quantities were noted at 1 qt low on each engine. Takeoff and climb were uneventful. After leveling off at cruise we ran the cruise checklist and noted that the right engine oil quantity was now showing 4 qts low after the 35 min time to climb to altitude. We continued to monitor the engine oil level and noted that it was dropping 1/2 qt about every 2-3 min. As a crew we made the decision that we would have to land and probably secure the right engine if the quantity didn't stop dropping. After hitting 7 qts low we made the decision to divert to [a nearby airport] and started our descent. As we were descending the right engine oil quantity hit 8 qts low triggering the amber crew alerting system oil level low right message. Because of the high rate of oil loss we made the decision to shut down and secure the right engine before it lost all of its oil. As we approached [the airport] we noted that the crosswind was approaching 15-20 knots so we elected to land at [a different nearby airport] with a 10;000 feet runway and only a 4 knot crosswind. [ATC was advised] enroute and equipment was standing by upon landing. Landing was uneventful and the aircraft landed safely with no known damage. Upon post flight inspection of the right engine excessive oil was found inside and all over the underside of the cowling. The oil cap was checked during preflight before departure and was found to be secure and in place upon inspection. Our passengers seemed very understanding and a recovery plane was in place within an hour.unfortunately a mechanical issue that could not be forecast and was handled appropriately. [We] feel that we handled this properly and would not have done anything differently.

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Original NASA ASRS Text

Title: CE-750 Pilot reported an inflight engine shutdown and diversion to an alternate resulted from low oil quantity on right engine.

Narrative: We departed with two passengers. Upon engine start engine oil quantities were noted at 1 QT low on each engine. Takeoff and climb were uneventful. After leveling off at cruise we ran the cruise checklist and noted that the right engine oil quantity was now showing 4 QTS low after the 35 min time to climb to altitude. We continued to monitor the engine oil level and noted that it was dropping 1/2 QT about every 2-3 min. As a crew we made the decision that we would have to land and probably secure the right engine if the quantity didn't stop dropping. After hitting 7 QTS low we made the decision to divert to [a nearby airport] and started our descent. As we were descending the right engine oil quantity hit 8 QTS low triggering the amber Crew Alerting System oil level low right message. Because of the high rate of oil loss we made the decision to shut down and secure the right engine before it lost all of its oil. As we approached [the airport] we noted that the crosswind was approaching 15-20 knots so we elected to land at [a different nearby airport] with a 10;000 feet runway and only a 4 knot crosswind. [ATC was advised] enroute and equipment was standing by upon landing. Landing was uneventful and the aircraft landed safely with no known damage. Upon post flight inspection of the right engine excessive oil was found inside and all over the underside of the cowling. The oil cap was checked during preflight before departure and was found to be secure and in place upon inspection. Our passengers seemed very understanding and a recovery plane was in place within an hour.Unfortunately a mechanical issue that could not be forecast and was handled appropriately. [We] feel that we handled this properly and would not have done anything differently.

Data retrieved from NASA's ASRS site 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.