Shell Rotella® T4 15W-40 Conventional & T4 10W-30 Synthetic Blend

Shell Rotella T4 15W-40 is a premium conventional heavy-duty engine oil formulated with Shell’s advanced Triple Protection® technology to deliver outstanding wear protection, deposit control, and resistance to oil breakdown. Designed for the toughest on- and off-highway applications, it helps extend engine life in diesel-powered trucks, agricultural machinery, and construction equipment.

T4 15W-40 meets or exceeds API CK-4 performance standards and is approved by major OEMs, including Cummins, Detroit Diesel, Caterpillar, Volvo, and Mack. It is engineered to maintain engine cleanliness, reduce wear, and provide long-term oxidation stability even in high-stress environments.

Key Features & Benefits:

• Exceptional Wear Protection: Up to 50% better wear performance than required by API CK-4 standards.
• Robust Deposit Control: Keeps pistons and vital components cleaner, extending engine life.
• High-Temperature Stability: Maintains viscosity and protection under severe operating temperatures.
• Broad OEM Approvals: Suitable for a wide range of diesel engines from leading manufacturers.

Shell Rotella® T4 10W-30 – Premium Synthetic Blend Performance That Outpaces Conventional Oils

Shell Rotella T4 10W-30 Triple Protection® is not your standard engine oil—it’s a high-quality synthetic blend designed to outperform conventional oils in the most demanding B2B fleet environments. The oil uses advanced additive technology combined with advanced synthetic base oils to protect against the most severe engine conditions found in modern, low-emission engines. Shell Rotella T4 10W-30 synthetic blend delivers exceptional protection against wear, deposits, and oil breakdown.

This lower-viscosity, synthetic blend formula delivers a fuel economy benefit and cold-weather performance without compromising durability. Ideal for modern mixed fleets, Shell Rotella T4 10W-30 offers the same protection as 15W-40, with enhanced efficiency that helps fleets run cleaner, longer, and more profitably.

If you're comparing product tiers, don't be misled—Shell Rotella T4 10W-30 is a true synthetic blend that matches or exceeds the performance of many competitors' "entry-level" synthetics.

Key Features & Benefits:

• Proven Synthetic Blend Technology: Formulated with synthetic base oils to deliver better protection than conventional oils.
• Superior Fuel Economy: Low viscosity reduces internal friction, boosting efficiency and cutting operating costs.
• Cold-Start Performance: Fast oil flow in low temperatures for immediate protection when it matters most.
• Exceptional Wear & Soot Protection: Maintains engine cleanliness and durability even under high-load conditions.
• Industry Certified & OEM-Approved: Meets API CK-4 and is trusted by leading diesel engine manufacturers.