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Check coolant level hot or cold?

Ford_lover38
Ford_lover38
in Ford Focus Club

Featured Replies

Hey All,

Just wondering should I check my engine coolant level when its hot or cold? I was just driving around and decided to check the level and saw that its on the "MIN" mark.

Should I top it up or shall I wait until the engine is cool then check the level again?

Thanks 

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    • Like 2


    Cold, and don't undo the cap when engine is hot, the cooling system is pressurised.

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    • Like 3
    • Author
    1 hour ago, kingsblue said:

    Cold, and don't undo the cap when engine is hot, the cooling system is pressurised.

    Thanks mate - should I fill it to the max level or just in the middle between min and max?

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    • Like 1

     

    3 hours ago, kingsblue said:

    The cooling system is pressurised

    ...and when the system is pressurised it can give a false reading.

    2 hours ago, Ford_lover38 said:

    should I fill it to the max level or just in the middle between min and max?

    Really? :wink:

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    • Like 1
    • Author
    1 minute ago, trailertrash said:

     

    ...and when the system is pressurised it can give a false reading.

    Really? :wink:

    Yep unfortunately really 🤔. I was always under the impression the closer to the max line the better but since then ive been told conflicting things.

  • Quote

    Yes mate. Fill to the max line when it's cold only.

    just make sure you have the correct grade of coolant thou for your vehicle. 

  • Quote
    • Like 2
    • Author

    Thanks mate

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