Can you safely remove the radiator cap if the engine is not overheated?

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Removing the radiator cap when the engine is hot can be dangerous, regardless of whether it appears to be overheated at that moment. The cooling system is pressurized, and if you remove the cap when the engine is still warm, you risk being sprayed with hot coolant or steam, which can lead to serious burns or injuries.

Once the engine cools, the pressure decreases, making it safer to remove the cap. However, it's crucial to allow the engine to cool down sufficiently and to ensure that it is not running. Always remember to use a cloth or a towel to cover the cap before opening it slightly and releasing any remaining pressure.

The other options do not provide accurate or safe circumstances for removing the radiator cap. Removing it anytime, regardless of the engine's status, when it is pressurized could lead to harm.

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