Shell Rotella T4 Triple Protection Heavy Duty 15W40 Diesel Oil delivers tough, proven performance for hardworking engines. This advanced motor oil is engineered with triple protection additives that fight wear, control deposits, and reduce oil breakdown, keeping diesel engines running smoothly under the most demanding conditions.

• Advanced acid control technology helps prevent corrosion caused by fuel combustion and oil aging
• Formulated to maintain exceptional engine cleanliness throughout the entire oil change cycle
• Improved shear stability supports consistent viscosity and reliable oil pressure under heavy loads
• Strengthens emission system performance while enhancing oil aeration for smoother operation
• Offers superior resistance to oxidation, reducing wear and promoting longer engine life
• Meets CK-4 standards for protection against oil breakdown, wear, and high-temperature stress
• Delivers better viscosity retention and aeration control compared to previous CJ-4 formulations