Why do you need a CAC tester? A semi-truck’s turbo system is crucial in helping the truck’s engine to work as efficiently and smoothly as possible. Although charge air coolers are designed and built for hard work under high temperatures, OE, and other aftermarket charge air coolers leak! Unfortunately the leaks only get worse over time, and it is a recommended to do a leak test every time the oil is changed. A well-maintained CAC will help prolong the engine’s life by preventing damage caused by elevated coolant temperatures.

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