Description
SILVER OX SAE 15W-40 | API CI-4/SM is engineered to provide strong performance and protection in a wide range of demanding applications. Formulated with advanced additives and premium base oils, it meets the requirements of both API CI-4 (diesel) and SM (gasoline) standards—making it an ideal choice for mixed fleet operations.
It helps control soot, sludge, and piston deposits, while offering excellent oxidation resistance and high-temperature stability. This oil supports longer drain intervals and maintains viscosity in extreme working environments, ensuring reliable protection and performance.
Key Features:
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Meets API CI-4 for diesel and SM for gasoline engine standards
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Excellent wear, soot, and deposit control
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Strong thermal and oxidation stability for longer oil life
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Ideal for high-load and high-temperature operations
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Suitable for mixed fleets with both diesel and petrol vehicles
Applications:
Perfect for commercial trucks, buses, construction machinery, agricultural equipment, and gasoline vehicles requiring SAE 15W-40 and API CI-4/SM performance.

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