German automaker Porsche introduce an engine oil specifically designed to work with the dated materials found in their vintage 356, 911, and 914 models. Upon the discovery that modern oils cause leaks by dissolving decade-old deposits, the team over at Porsche developed an alkaline-heavy formula that instead neutralizes build-up and corrosive acids. According to Porsche, air-cooled engines have different heat demands than water-cooled units, and this oil is made to meet those requirements. So if you own a vintage Porsche, get it. But if you don’t, still get it – the iconic packaging surely makes this a collectible. The oil comes in two sizes, both available here.