The MAG 1 Mag 1 15W40 Ck4 H/D Diesel Oil Qt is a 1 quart container of diesel engine oil designed for heavy-duty vehicles. This product is made in the US by MAG 1 and is compatible with various vehicle models. It is a high-quality motor oil that helps ensure the smooth operation of diesel engines, providing protection against wear and tear. With a color of amber and dimensions of 4.5″ in length and 2.5″ in width and depth, this oil is ideal for use in a variety of vehicles.