Shell Rotella T5 15W40 Synthetic Blend Motor Oil is formulated to provide reliable lubrication and protection for heavy-duty diesel engines operating under demanding conditions. Its synthetic blend formulation helps protect against engine wear, deposits, oxidation, and oil breakdown while supporting clean and dependable engine performance. The SAE 15W40 viscosity provides dependable lubrication across a wide range of operating temperatures and is suitable for demanding diesel applications. Supplied in a 5-gallon pail, it is well suited for trucks, commercial vehicles, fleets, heavy-duty equipment, and professional maintenance operations.