How to Clean the Inside of an Engine Radiator?
2 Answers
Engine radiator internal cleaning method is: 1. Add radiator cleaner into the radiator filler port for soaking and cleaning; 2. Drain the cleaner after 20 to 30 minutes; 3. Rinse the radiator and pipes thoroughly with water to complete the process. The engine radiator is a key component in the automobile cooling system, whose function is to absorb heat from the cylinder block, keeping the engine at an appropriate operating temperature and improving engine efficiency. The working principle of the engine radiator is that high-temperature coolant flows from the engine interior to the radiator via the water pump, gets cooled by the radiator, and then returns to the engine to maintain the engine's suitable temperature. If too much scale, fallen leaves, or other impurities accumulate in the radiator, it can weaken the radiator's cooling effect and may even cause excessive engine wear.
When cleaning the interior of the car's engine radiator, I usually start by draining the old coolant—remember to wait until the engine cools down for safe operation, otherwise it's easy to get scalded. Then, add a specialized cleaning agent to the radiator, start the engine, and let it circulate for a few minutes to dissolve deposits and rust. When rinsing, I use a water gun to thoroughly flush out any residues, ensuring no impurities remain. Finally, add new coolant that matches the vehicle type. Regular cleaning like this can prevent corrosion, maintain cooling efficiency, and extend the engine's lifespan. I make it a habit to check every two years, especially for older vehicles that are prone to accumulating dirt and affecting heat dissipation. The entire process takes about half an hour, and all you need are gloves and a bucket—just be careful not to let the chemicals splash onto your skin.
