Dec 03, 2018 · How to Change Radiator Fluid. Prevent this from occurring by flushing your coolant at the prescribed intervals for your vehicle. Some vehicles recommend a change in coolant every 30,000 miles, while others may be up to 60,000. Look in your vehicle’s owner’s manual to find out what is appropriate for your car or truck.
Yet most owners don’t replace it when they change their coolant. That’s a mistake: A failed thermostat is the second most common cause of engine overheating and engine failure (a failed radiator fan is No. 1). And a worn radiator cap (sometimes it’s on the overflow tank) can also contribute to engine overheating.
Corrosion can damage the radiator, water pump, thermostat, radiator cap, hoses and other parts of the cooling system, as well as to the vehicle heater system. And that can cause a car engine to overheat. Thus, the coolant in any vehicle with more than about 50,000 miles should be tested periodically.
Antifreeze car Safety Precautions. Make sure you follow all the necessary safety precautions to …
Let the radiator and water pump drain completely. Then reattach the lower radiator hose and clamp. Next, locate and remove the block drain plugs (they’re not in the same spot on every engine, so refer to a repair manual for the location of yours). Reinstall the block drain plugs and move on to the refilling step.