How to Clean the Exterior of a Car Radiator?
2 Answers
To clean the exterior of a car radiator, follow these steps: 1. Since the car radiator is mostly hidden behind the engine bumper, you need to remove the bumper before cleaning. Ensure all fixing screws are loosened during removal, and slowly detach it from both ends towards the center to avoid breaking the clips. 2. After removing the bumper, the radiator's position becomes clearly visible. Adjust the water gun nozzle to a spray pattern and set the pressure to an appropriate level before rinsing the dirty radiator surface. 3. Once rinsing is complete, check for any bent cooling fins. Straighten them using tweezers or a bamboo stick if necessary. After inspection, reinstall the bumper in the reverse order of removal to complete the radiator cleaning process.
As an experienced driver who has helped out at auto repair shops, my go-to method is to first remove the front bumper—the radiator is usually right behind the grille. Remember to turn off the engine and let it cool completely to avoid burns. The high-pressure water guns used at car washes are actually quite risky; the strong jet can bend the aluminum cooling fins. I use a garden watering can set to mist mode, add a capful of neutral detergent, and rinse from top to bottom. If mud clumps get stuck between the fins, I use a soft-bristled brush (like a new paintbrush) to gently sweep them away. An old-timer at the car wash taught me a trick: every six months, use compressed air to blow from inside the engine compartment outward—it works wonders for stubborn willow and poplar fluff.
