Chevron DELO® 400 XSP SAE 5W-40 Full Synthetic Diesel Engine Oil is a premium synthetic heavy-duty engine oil formulated with ISOSYN® Advanced Technology to provide maximum protection, durability, and fuel efficiency in the toughest operating conditions. Meeting the latest API CK-4 specification, it is engineered for both modern low-emission diesel engines and older models, making it the ideal choice for mixed fleets.

This advanced full synthetic oil delivers:

• Superior wear protection for pistons, rings, and bearings

• Outstanding cold start performance with rapid oil flow at low temperatures

• Improved oxidation and deposit control for cleaner engines and extended service intervals

• Excellent shear stability to maintain viscosity under high stress

• Fuel efficiency benefits without sacrificing durability

Packaged in a convenient 3/1 gallon case, it’s perfect for fleet operators, service shops, and diesel vehicle owners who demand premium protection and easy handling. Suitable for on-road trucks, construction equipment, agriculture, and extreme environments, Chevron DELO 400 XSP SAE 5W-40 keeps engines running stronger and longer under the harshest conditions.