Chevron Ursa Super Plus EC 15W-40 CK-4 is a high-quality, synthetic blend engine oil designed for use in heavy-duty diesel engines operating under severe conditions, including those equipped with diesel particulate filters (DPF) and other emission control systems. Formulated with high-quality base oils and advanced additive technology, this engine oil provides excellent wear protection, deposit control, and soot dispersal properties, ensuring the smooth and efficient operation of your engine. Chevron Ursa Super Plus EC 15W-40 CK-4 meets or exceeds major OEM and industry specifications, including API CK-4, and is suitable for use in a wide range of diesel engines operating in on-road and off-road applications. Trust Chevron Ursa Super Plus EC 15W-40 CK-4 to protect your engine, extend its life, and reduce maintenance costs.