What Causes Engine Oil to Enter the Radiator?

[LailaLynn]

The main reasons for engine oil entering the radiator are as follows: 1. Cylinder liner damage. 2. Radiator damage. 3. Cylinder head gasket damage. If any damage is found, simply replace the damaged part with a new one, but afterward, the radiator must be thoroughly cleaned. Below are the steps for dealing with engine oil in the car radiator: 1. Disconnect the overflow tank and turn off the heater (set the switch to the cold air position). 2. After starting the vehicle and allowing the water temperature to rise, use a water hose to flush the radiator opening until no significant oil traces remain, then stop. 3. Turn off the engine, open the radiator drain valve, and start the engine once water begins to flow. Continue adding water to the radiator opening to allow circulation for 5 minutes, then turn off the engine and stop adding water. After all the water has drained from the radiator, close the drain valve and refill with water. 4. Start the car without covering the radiator cap, and observe the radiator opening for any oil traces once the engine is warm. If none are found, the procedure is effective. 5. Reconnect the overflow tank and replace the coolant as needed.