The Delo 400 XLE SB Synthetic Blend SAE 15W-40 Heavy-Duty Diesel Motor Oil is a high-quality product designed for diesel engines. Made in the United States, this 1-gallon container of motor oil is specifically formulated for heavy-duty use, providing excellent performance and protection. With a synthetic blend formula and oil viscosity of 15W-40, this product is ideal for ensuring smooth and efficient operation of your diesel vehicle. Ideal for mechanics and automotive enthusiasts looking for a reliable and effective motor oil solution.