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is auto antifreeze compatible with salt water?

I want to be able to keep water from freezing, to -45 degrees. I don't want to use straight anti-freeze, I don't want the smell. Can I use a high concentration of salt water(good to aprox -25) and then top it off with auto antifreeze

1 Answer

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  • Anonymous
    1 decade ago
    Favorite Answer

    If you read the side of the antifreeze jug, it actually freezes at a lower temperature at 60% antifreeze and 40% water that pure antifreeze. That's what I use and I live where it is common to get -50 C or -58 F outside. I use synthetic 0W30 and don't have to plug in my block heater.

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