B737-700
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 425; Flight Crew Type 2500
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Provided Assistance; Aircraft Equipment Problem Dissipated; Flight Crew Diverted; Flight Crew Landed As Precaution; Flight Crew Requested ATC Assistance / Clarification; General Maintenance Action
Aircraft; Human Factors; Weather
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.
On initial takeoff we experienced oil quantity fluctuations on #1 engine between 16 to 55. We leveled at 5;000 feet MSL and coordinated for return to ZZZ for Maintenance. ATIS information reported OVC 004 and two mile visibility. We shot ILS and executed a go-around at minimums due to ceilings and visibility below minimums. We diverted to our departure alternate without further incident.
B737 flight crew reported diverting due to an engine oil indication malfunction.