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I have seen propylene glycol based antifreeze sold as an environmentally friendly alternative to ethylene glycol based antifreeze. Is this true?

April 26, 2017alternative antifreeze based environmentally ethylene friendly Glycol Propylene seen sold

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I have seen propylene glycol based antifreeze sold as an environmentally friendly alternative to ethylene glycol based antifreeze. Is this true?

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Both propylene glycol and ethylene glycol have similar biodegradability and will eventually break down into nontoxic byproducts. Neither should be dumped in the environment. Antifreeze picks up heavy metals such as lead during use in the engine. Therefore, both ethylene glycol and propylene glycol antifreezes should be returned to a recycling center to minimize harmful effects on our environment after use. Spills should be cleaned up immediately. Ethylene glycol is more toxic than propylene glycol. Ingesting a small amount of ethylene glycol is far more dangerous for small children or animals, for example, than ingesting a small amount of propylene glycol. Take appropriate steps to prevent the ingestion of either ethylene or propylene glycol, as well as new or used engine coolants containing these glycols.