A shortage of propylene glycol, the key ingredient of de-ice fluid, may make that often-vital substance scarce
A shortage of propylene glycol, the key ingredient of de-ice fluid, may make that often-vital substance scarce, or substantially more costly, this winter -- possibly both. Propylene glycol is brewed from isopropyl alcohol and glycerin, which are in turn processed from vegetable matter. While Dow...
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