B737 flight crew reported diverting due to an engine oil indication malfunction.

Attributes
ACN	1607701
Time
Date	201901
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Oil Contents Indication
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 425 Flight Crew Type 2500
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Weather / Turbulence

Narrative:

On takeoff; we experienced an erratic left engine low oil quantity indication. After leveling off at 5;000 feet; the engine oil indication returned to normal range. However; the oil quantity indication was fluctuating abnormally. As a precaution; we elected to return to ZZZ to allow maintenance an opportunity to correct the issue. Although the visibility was 2 NM at the FAF; we did not see the field at minimums. Subsequently; we diverted to our takeoff alternate without further incident.

Original NASA ASRS Text

Title: B737 flight crew reported diverting due to an engine oil indication malfunction.

Narrative: On takeoff; we experienced an erratic left engine low oil quantity indication. After leveling off at 5;000 feet; the engine oil indication returned to normal range. However; the oil quantity indication was fluctuating abnormally. As a precaution; we elected to return to ZZZ to allow Maintenance an opportunity to correct the issue. Although the visibility was 2 NM at the FAF; we did not see the field at minimums. Subsequently; we diverted to our takeoff alternate without further incident.

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.