B757-200 first officer reported a drop in oil pressure and a rise in oil temperature in the left eng...

Narrative:

Normal brief with the complex single engine departure procedure completed. Takeoff was normal with no complications. Climbing out at about 10;000 feet; we started to smell something and noticed the oil pressure on the left engine was falling. Then the oil temperature started rising. Captain gave the first officer (first officer) the airplane; so he could get into the checklist. First officer took the controls; captain radioed for a level off altitude. The oil temperature turned red and the oil pressure was very low; as well; no oil pressure light. First officer pulled the engine back towards idle to try to get the oil temperature to lower. Captain started in on the oil temperature checklist. First officer leveled off at 12;000 feet and slowed to 250 knots. Captain requested a turn back to [the departure airport] to land. ATC began giving us vectors and lower altitudes. The oil temperature began a nice decrease. With the oil temperature back in the normal range; the oil pressure began rising; as well. We returned for the ILS approach with delay vectors to complete the checklist; brief; and landing data. On the approach the oil pressure and oil temperature was parallel to the good engine. A normal approach; landing and taxi in with shut down checklist was completed. As a crew; we worked seamlessly well together! The captain did a superb job.

Original NASA ASRS Text

Title: B757-200 First Officer reported a drop in oil pressure and a rise in oil temperature in the left engine during climb and returning to departure field.

Narrative: Normal brief with the complex single engine departure procedure completed. Takeoff was normal with no complications. Climbing out at about 10;000 feet; we started to smell something and noticed the oil pressure on the left engine was falling. Then the oil temperature started rising. Captain gave the FO (first Officer) the airplane; so he could get into the checklist. FO took the controls; Captain radioed for a level off altitude. The oil temperature turned red and the oil pressure was very low; as well; no oil pressure light. FO pulled the engine back towards idle to try to get the oil temperature to lower. Captain started in on the Oil Temperature Checklist. FO leveled off at 12;000 feet and slowed to 250 knots. Captain requested a turn back to [the departure airport] to land. ATC began giving us vectors and lower altitudes. The oil temperature began a nice decrease. With the oil temperature back in the normal range; the oil pressure began rising; as well. We returned for the ILS approach with delay vectors to complete the checklist; brief; and landing data. On the approach the oil pressure and oil temperature was parallel to the good engine. A normal approach; landing and taxi in with shut down checklist was completed. As a crew; we worked seamlessly well together! The Captain did a superb job.

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.

Attributes
ACN	1614744
Time
Date	201901
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Other Controlled
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

B757-200 first officer reported a drop in oil pressure and a rise in oil temperature in the left engine during climb and returning to departure field.