ROYAL-EX 15W50-SN is a premium multi-purpose engine oil designed for high-performance gasoline
and light diesel engines requiring robust protection. Its high viscosity index provides superior
protection during extreme temperatures and heavy loads, maintaining a strong oil film for
maximum engine durability.
Key Features
High viscosity index for superior oil film strength
Excellent engine protection against wear and mechanical stress
Superior thermal and oxidation stability in all conditions
Effective deposit control to keep internal components clean
Robust performance specifically for high-mileage engines