Inspection and Cleaning the Radiator

Inspect the radiator for clogging or damage and clean and/or repair it if necessary. Soak the radiator with a non-corrosive degreaser such as Simple Green. Let the unit sit for several minutes to work through the radiator. Using low water pressure, rinse the radiator. Be careful not to damage or bend the fins of the radiator. Depending on the condition of the radiator, this process may have to be performed several times.