The M-605 Series Corrosion Protection additive by Cortec is designed to minimize the impact of deicing salts on vehicles during the winter by preventing corrosion due to chlorides. It is offered in three options: the M-605 L is a liquid additive for deicer fluids and is available in 5- and 55- gallon drums, as well as in bulk. The M-605 and M-605 PS are powder additives, and are available in 5, 50, and 100 lb. amounts. All options have a shelf life of 2 years.