Mobil Delvac Modern™ 15W-40 Super Defense V4 is a high-performance synthetic diesel engine oil designed to provide effective lubrication and extend engine life. It surpasses the requirements of most major European and American engine manufacturers and is suitable for both modern low-emission engines and older engines using low or high-sulfur fuels. The formulation includes high-quality base oils and a balanced additive system to control oil thickening due to diesel soot, high-temperature effects, oxidation, corrosion, and high-temperature deposits. It ensures optimal performance in heavy-duty applications such as trucking, construction, mining, and agriculture, and offers enhanced protection and extended engine life.