What to Do When the Car Radiator Water is Too Dirty?

1 Answers
DiKeira
07/29/25 8:25pm
Slowly add radiator automatic cleaner into the radiator until the coolant reaches the normal level, then tighten the radiator cap. Allow the water temperature to reach normal operating temperature, then run the engine for 1-40 hours as needed. If there are hard water deposits in the cooling system, extend the running time to 10-48 hours. Drain the coolant containing deposits and replace it with antifreeze or clean coolant. Clean the radiator with automatic cleaner once a year.
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