Description Shell Rotella T5 15W-40 Synthetic Blend heavy duty diesel oil with Triple Protection Plus technology delivers all the benefits you've come to expect from Shell Rotella, and then some. Triple Protection Plus is the unique combination of Triple Protection advanced additive technology and synthetic base oils. Triple Protection Plus represents protection against wear, deposits, oil breakdown plus better low temperature flow. This synthetic blend oil provides excellent equipment protection, long engine life and maintains viscosity control under high temperatures. It delivers: - Excellent wear protection - Exceptional deposit control/cleanliness - Protection against oil breakdown - Sustained emission control system durability in particulate filters and after-treatment systems. For Every Hardworking Need. Shell Rotella T5 15W-40 Synthetic Blend is suitable for a wide range of heavy duty engine applications. It is an excellent choice for on-highway fleets, construction, agriculture, and diesel pick-up trucks, including high-power vehicles where resistance to increased heat and stress is required. It provides all the protection you expect from an SAE 15W-40 but in a synthetic blend heavy duty engine oil. Going Beyond CK-4 Wear Limits. Shell Rotella T5 15W-40 Synthetic Blend Technology works even harder than new CK-4 specifications require, delivering an average of 37% better wear protection than the maximum wear requirements. Strong Cleanliness. Multiple tests demonstrate that Shell Rotella T5 15W-40 diesel oil provides excellent piston cleanliness, exceeding Mercedes and Volvo limits.