How to Clean Dirt on the Radiator?
2 Answers
You can use a radiator cleaner to perform the cleaning. The specific steps are as follows: 1. Park the vehicle and turn off the engine. Wait for the coolant temperature to drop, then open the expansion tank and add the radiator cleaner; 2. Start the engine and let it idle for 5-10 minutes after the cooling fan activates; 3. Turn off the engine and remove the front bumper. Ensure all fastening screws are loosened before slowly detaching it from both ends toward the center, being careful not to break the clips; 4. Once the coolant has completely cooled, drain the radiator cleaner along with the old coolant, then refill with new engine coolant.
When cleaning dirt off the car radiator, I always let the engine cool down completely to avoid burns. Then, I use a soft-bristle brush to gently remove surface dust and insect debris. For stubborn stains like grease, I spray some automotive-specific cleaner, wait a few minutes for it to soften, and rinse with a garden hose at low pressure to prevent bending the cooling fins. Afterward, I check if the fan rotates properly and top up the coolant to ensure proper levels. Doing this regularly, once every quarter, improves cooling efficiency and prevents overheating issues. Remember to start the car after cleaning and monitor the temperature gauge—stability is key. Avoid using pressure washers or hard tools for scrubbing, as they can damage delicate components and lead to costly repairs.
