Engine: Motor Plants and Auxiliary Boilers

1. A The lubricator reservoir bowl should be re-filled with clean oil when it becomes approximately half full as shown in the glass.
2. B The lubricator reservoir bowl should be re-filled with clean oil when the level is no longer visible in the glass.
3. C The lubricator reservoir bowl should be re-filled with clean oil when it is estimated that the bowl is completely empty.
4. D The lubricator reservoir bowl should be re-filled with clean oil as soon as the level drops to the very upper part of the glass.

Tip: press A-D to answer