With the temperature climbing this summer a lot of people change their thermostats in their Cat C15 engine as a cheap way to eliminate them as a cause of overheats. While they may not be the cause of the overheat, this video details the right way to remove, clean, and reinstall the thermostat housing. Did this video help you save time or money? If so, consider sending support on Paypal, for the username [email protected] and thank you very much for watching.