Oil Level Indicator

View Products

The Oil Level Indicator (OLI) was developed in response to the need of maintenance professionals to gauge the oil level inside large tanks, gearboxes and reservoirs. When water contamination is not a problem or when a regular Esco Oil Sight Glass is already installed at the drain port, the Oil Level Indicator can be utilized to monitor oil level. The oil gauge indicator is a clear acrylic tube with ½” NPT threads at each end. Red and green decals are included with the OLI to mark upper and lower limits, or to designate running oil level and idle oil level. Oil Gauge Indicators can be installed with the optional breather* at the top ½” NPT port as seen on the Esco Oil Sight Glass and Level Monitor. If the user requires a closed loop, the ½” NPT can be used as a connector port to feed back into the system. Operators can visually monitor the oil for dirt and debris and take appropriate preventive action.     

Why use an old style vented oil gauge that is difficult to see through and has breakable glass, when you can install a crystal clear, strong acrylic Esco Oil Level Indicator that offers 360° of oil viewing?

oil level indicator

Old Style Vented Sight Gauge                           Esco Oil Level Indicator       

  1. Oil Level Indicator

    Oil Level Indicator

    Product #:OLI3OLI6OLI9OLI15OLI12

    The Oil Level Indicator is offered in 3”, 6”, 9”, 12” and 15” lengths. Longer lengths, custom options, and additional hardware available

    Price From: $39.81
  2. Optional Breather for OLI Sizes 3" - 15"

    Optional Breather for OLI Sizes 3" - 15"

    Product #: ESBCAP

    Esco Breather Cap with 2-micron filter and 1/2” NPT protects from contamination and particles.


per page
Set Descending Direction

2 Item(s)