EMB ERJ 145 ER/LR
Aircraft Equipment Problem Critical
Flight Crew Landed As Precaution; Flight Crew Diverted; Flight Crew Inflight Shutdown; General Declared Emergency
Aircraft
While on climbout we were watching our oil quantity on engine number one because it had been serviced before departure. We were topped off to 12 quarts before departure. During climbout we watched a steady drop in quantity in the same engine. Within 70 or so miles from our departure; we had dropped from 12 to 5 quarts. At this point we had begun to contact Dispatch. With a great deal of CRM we decided together that we would watch the pressure and temp of the engine. When we saw a change and [a] drop to 4 quarts we decided to divert to [a nearby suitable airport]. Being so close to [the selected airport] it was the best plan of action. With a change in indications on our ICAS we felt that the engine should be shut down to hopefully save it mechanically. Running our checklists and the QRH we shut engine one down; declared an emergency; and began to take vectors to the approach. After finishing our checklists we decided we would restart the engine as we intercepted the final approach course. At this point the engine was shut down and we read 6 quarts. We decided this because of an underlying layer of possible ice. As we intercepted we restarted engine one. Before we hit the marker the quantity had dropped to two quarts.  We landed safely on two engines and then as we taxied off the high speed we shut number one down again. The plane was taken to the hangar.
EMB-145LR First Officer reported number 1 engine oil quantity decreased rapidly after takeoff; noting the engine had been serviced for oil before departure. Flight crew decided to divert to nearest suitable airport; the engine was shut down during the divert; and restarted for the approach.