Episode three provides instructions on how to use the Dura-Lite Charge Air Cooler Tester-Kit^™, a tool designed to quickly and efficiently check for leaks in a charge air cooler. Dura-Lite has produced a useful video, which is hosted on YouTube, that explains how CAC leaks can lead to reduced horsepower, poor fuel economy, and cause issues with the DPF filter. It guides the user through the process of selecting and installing the appropriate rubber plugs into the inlet and outlet of the cooler, explaining how to ensure a snug fit and secure the plug with safety clamps.

The instructions detail how to attach the gauge assembly, which includes a pressure relief valve and quick coupler, and how to apply air pressure (typically 30 psig for Class 8 trucks). Finally, the video explains how to interpret the results by observing a specific pressure drop within a set timeframe to determine if a leak is present. One of the main benefits of the Dura-Lite Charge Air Cooler Tester-Kit is being able to test the cooler while it remains installed on the truck.

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