Cooling systems allow your lawn mower's engine to run without overheating, so if they're not properly maintained, it can be ...

Before cleaning, make sure the radiator is cool to avoid burns. For car radiators, park the car on a flat surface and allow the engine to cool completely. Keep a drain pan ready to catch old coolant.

For the record, a V-8's cooling system is the most forgotten and neglected part of any hot rod. We speak from firsthand experience. It used to be that you could replace a factory 195 degree thermostat ...