1997 Toyota corolla slowly loosing coolant but i see no leaks?

I haven't added coolant yet but it is pretty close to the low line. But i see no leaks. What could be causing this?

6 Answers

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  • Jay P
    Lv 7
    2 months ago

    Coolant doesn't just evaporate or disappear, it has to go somewhere.

    If it is not leaking externally, it's leaking internally.  Look at the engine oil and under the oil filler cap to see if the oil looks a little milky.  It could also be leaking into one or more of the cylinders and being burned up by the combustion process.

  • 2 months ago

    Check the water pump shaft seal weephole. It only leaks under pressure and coolant dries quickly when the engine is hot.

  • 2 months ago

    Get the cooling system pressure tested. If no leaks show up the head gasket may be going bad and you're burning antifreeze slowly.

  • Barry
    Lv 6
    2 months ago

    Probably a leaking head gasket. But look closely for crystalline deposits which antifreeze leaves behind.

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  • 2 months ago

    It could be leaking into the combustion chambers, then coming out the tail pipe as white smoke.

  • Anonymous
    2 months ago

    it either has a leak or it has a blown head gasket and coolant is getting into the cylinders and burning.

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