Oil Level Indicator

Easily Monitor Oil Level

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. 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° view of oil?

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  1. Optional Breather for OLI Sizes 3" - 15"

    Optional Breather for OLI Sizes 3" - 15"

    Esco Breather Cap with 2-micron filter and 1/2” NPT protects from contamination and particles.  Recommended for use on the Oil Level Indicators when a closed-loop system is not necessary.

    $12.10
  2. Oil Level Indicator

    Oil Level Indicator

    The Oil Level Indicator (OLI) is a is a clear acrylic tube with 1/2” NPT threads at each end for lengths 3” to 15”. 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. It can be installed with the 1/2” ESBCAP optional breathers or if the user requires a closed loop, the 1/2” NPT can be used as a connector port to feed back into the system. See below for product details, specifications, temperature and pressure ratings and size and part number chart.

    As low as $39.81
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