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Thread: Shelf life of anti-freeze?

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    Join Date
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    Shelf life of anti-freeze?

    Anyone know if anti-freeze goes "bad", opened and/or factory sealed?
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    22.5k gal. (est.) IG Dark Plaster Pool (2007)
    Jandy Stealth SHPM 2.0HP Pump ~100gpm
    Jandy CL460 Cartridge Filter
    Polaris 9300 Bot/Cleaner
    Jandy AE-Ti AE2000T Heat Pump
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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    Mod Squad Bama Rambler's Avatar
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    Re: Shelf life of anti-freeze?

    What type Anti-freeze?

    Engine antifreeze concentrate doesn't, premixed does and it's anywhere from 1 to 5 years.

    RV antifreeze, if kept in the original container has a shelf life of at least one year and I've read up to ten years.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Shelf life of anti-freeze?

    Pool / RV antifreeze. Are they (pool/RV AF that is) all Propylene Glycol BTW? If not, any preferences?

    Also, any reason to use / not use concentrated anti-freeze (typically finding it in qts) instead of the standard diluted stuff typically found in gals? The logic in me says pour the concentrate in the line after blowing them and, *if* your plug doesn't quite hold or whatever let the water that gets in do the diluting.

    [edit: spelling ability falls off 2 hrs past bedtime]
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    22.5k gal. (est.) IG Dark Plaster Pool (2007)
    Jandy Stealth SHPM 2.0HP Pump ~100gpm
    Jandy CL460 Cartridge Filter
    Polaris 9300 Bot/Cleaner
    Jandy AE-Ti AE2000T Heat Pump
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
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    SouthWest Alabama
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    21,778

    Re: Shelf life of anti-freeze?

    All I've seen are Propylene Glycol. I like your idea about adding it full strength. It may waste some but if it gives you peace of mind then it's worth it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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