Oil monitoring system

A filter system, comprising:

• a filter chamber body having a chamber base, and at least one chamber wall that extends up from the chamber base;
• a chamber inlet that extends through the filter chamber body, wherein the filter chamber body is configured to receive a fluid through the chamber inlet;
• a chamber outlet that extends through the filter chamber body at a location downstream of the chamber inlet with respect to a direction of fluid flow through the filter chamber body, wherein the filter chamber body is configured to expel the fluid through the chamber outlet;
• a plurality of fluid flow paths that extend between the chamber inlet and the chamber outlet, the plurality of fluid flow paths including first and second subsets, each including at least a respective one of the fluid flow paths;
• a plurality of hydrocarbon filters disposed in the filter chamber body such that each hydrocarbon filter is disposed in a respective different one of the plurality of fluid flow paths, and each hydrocarbon filter is configured to remove and retain hydrocarbons from the fluid;
• a first inlet channel within the filter chamber body and in fluid communication with an inlet of each hydrocarbon filter of the first subset;
• and
• a second inlet channel within the filter chamber body and separated from the first inlet channel by a first baffle, the second inlet channel being in fluid communication with an inlet of each hydrocarbon filter of the second subset,
• wherein the filter system is configured such that, once each hydrocarbon filter of the first subset is saturated with hydrocarbons, the first inlet channel fills with fluid until the fluid cascades over the first baffle to the second inlet channel.