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Radiator Cleaning Process and Precautions?

4 Answers
LaSophia
09/05/25 6:29am
Radiator Cleaning Process and Precautions involve removing dirt from the car radiator. After scale forms in the radiator, a radiator cleaner can be used for descaling. Below are specific details on radiator cleaning precautions: 1. Use a radiator cleaner for descaling: This will not block the tiny water channels in the engine. General cleaning agents cannot completely remove scale and acidic substances from the water channels. Sometimes they may loosen large pieces of scale, but this can block the water channels and may even require removing the radiator for cleaning. 2. Pay attention to the selection of radiator coolant: Use high-quality coolant or antifreeze.
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Eugenia
09/17/25 6:49am
I've done radiator cleaning many times. First, wait for the engine to cool down completely to avoid burns from hot liquids. Then open the radiator cap and unscrew the drain plug at the bottom to completely drain the old coolant. Use a basin to catch the waste fluid—don't pour it out carelessly to avoid environmental pollution. Next, mix a neutral cleaner with water, pour it into the radiator, and start the engine to circulate the hot water for about ten minutes. This helps dissolve scale and rust stains. After draining, rinse thoroughly with clean water at least three times to ensure no residue remains, as it could clog the pipes and affect cooling. Finally, refill with new coolant to the full mark and check that all components are tightly secured to prevent leaks. Wear gloves and goggles throughout for safety. Doing this once a year keeps the engine running longer with stable temperature control.
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VanCamilla
10/31/25 7:20am
Flushing the radiator is quite a challenge for me. It's crucial to wait until the car cools down completely, otherwise it can be dangerous. Before opening the radiator cap, press it slightly to release any built-up steam. After draining the old coolant, rinse the system several times with a hose. I prefer using commercially available cooling system cleaners - just dilute them according to the instructions, pour in the solution, run the engine for about ten minutes, then drain again. Be thorough during flushing, as any residue might cause localized corrosion. When adding new coolant, don't exceed the MAX line to prevent overflow. The whole process only requires basic tools, but beginners should probably watch some online tutorial videos first. Regular radiator maintenance can help avoid major repair troubles down the road.
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JosephRose
12/14/25 7:28am
The key to cleaning the radiator is safety: first cool the engine to prevent burns. After opening the drain screw, use a tray to collect the waste liquid. Use specialized cleaning agents instead of strong acids. Rinse multiple times to ensure cleanliness, otherwise clogged fins can easily cause overheating. Dispose of waste liquid environmentally and avoid dumping it randomly. Regular cleaning prevents scale and rust, with each DIY session being very low-cost, saving a lot of money.
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