Chevron Delo® 400 SDE 15W-40 CK-4 Diesel Engine Oil is a premium heavy-duty engine oil formulated with ISOSYN® Advanced Technology to deliver proven durability, wear protection, and long service life for diesel engines in on- and off-highway applications. Meeting the latest API CK-4 specification, it is engineered for modern low-emission engines while remaining fully backward compatible with older diesel engines—making it an excellent choice for mixed fleets.

Key benefits include:

• Superior wear protection for pistons, rings, and bearings under heavy loads

• Improved oxidation resistance to extend oil life and maintain engine cleanliness

• Strong shear stability, ensuring consistent viscosity in severe duty cycles

• Cleaner operation, reducing deposits and minimizing downtime

• OEM approvals from leading manufacturers, ensuring confidence in performance

Packaged in a 55-gallon drum, this bulk option is ideal for fleets, service shops, mining operations, and industrial users requiring reliable high-volume supply. Trusted by professionals worldwide, Chevron Delo 400 SDE 15W-40 delivers long-lasting engine protection, lower maintenance costs, and dependable performance for heavy-duty diesel engines.