Is antifreeze still toxic? Most antifreeze is made from ethylene glycol. Ethylene glycol-based antifreeze tastes sweet but is highly toxic to both humans and animals. Propylene glycol-based antifreeze is slightly more expensive, but is non-toxic to pets and wildlife. Is modern antifreeze toxic? “Ethylene glycol itself is not toxic, but when it is metabolized in … Continue reading Is antifreeze still toxic?
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