Buick dealers had this 12-fluid-ounce can of Heavy Duty Cooling System Protector to protect automobile cooling systems and help their customers with overheating issues. The ingredients in this can prevent rust and corrosion, allowing anti-freeze to flow smoothly through copper and aluminum radiators. A few minor marks are on the side of this can, which has great colors and graphics. The liquid contents are still in the can, as it has yet to be opened and retains the original cap. Some slight peeling with rust is evident on the pop top cap. Great piece to display with your 1950s to 1960s Buick! 20805-TP