Automotive antifreeze is usually made from an ethylene glycol formulation. Such antifreeze can be re-refined to produce pure ethylene glycol, which can then be used to manufacture new antifreeze.

While antifreeze has been recycled in many ways, the fractional distillation process allows for the most pure ethylene glycol and can enable the product to be recycled an infinite number of times. Extended life properties of the product will reduce the number of antifreeze changes, lowering purchasing amounts and mitigating costs. It is important to properly recycle antifreeze and to avoid spills. If spilled, it should be cleaned up quickly as ethylene glycol is toxic to plants, animals and people.

Antifreeze should never be poured down the drain, sewer, or storm pipe.