Shell Rotella T6 5w-40

Shell Rotella T6 5W-40 Full Synthetic Diesel Engine Oil

Full Synthetic SAE 5W-40 Heavy-Duty Diesel Engine Oil with Triple Protection Plus Technology

Shell Rotella T6 5W-40 is a full synthetic heavy-duty diesel engine oil formulated for modern and older diesel engines requiring SAE 5W-40 and API CK-4 or other supported specifications. Shell's Triple Protection Plus technology combines synthetic base oils with an advanced additive system designed to protect against wear, deposits, oil breakdown, and severe operating temperatures.

The SAE 5W-40 viscosity grade provides improved low-temperature flow compared with conventional SAE 15W-40 while maintaining viscosity and oil pressure under demanding operating conditions. Shell also uses a low-ash formulation designed for compatibility with exhaust aftertreatment systems found on modern low-emission diesel engines.

Rotella T6 5W-40 is suitable for applications ranging from Class 8 tractor-trailers and heavy-duty diesel pickups to delivery vehicles, utility fleets, and school buses. Shell also identifies it as a suitable replacement for mineral and synthetic SAE 15W-40 API CK-4 and CJ-4 oils in low-temperature applications when SAE 5W-40 is appropriate for the engine.

Key Benefits

• Full synthetic SAE 5W-40 heavy-duty diesel engine oil
• API CK-4 performance
• Triple Protection Plus technology
• Helps protect against engine wear
• Helps control deposits caused by soot, dirt, and other contaminants
• Resists oil breakdown at high operating temperatures
• Improved low-temperature flow compared with conventional SAE 15W-40
• Strong shear stability helps resist viscosity loss
• Low-ash formulation designed for exhaust aftertreatment compatibility
• Suitable for new and older diesel-powered vehicles
• Shell reports up to 1.5% enhanced fuel economy capability compared with SAE 15W-40 heavy-duty engine oils

Wear and Deposit Protection

Heavy-duty diesel engines can expose engine oil to soot, contaminants, high loads, and elevated temperatures. Rotella T6 5W-40 uses synthetic base oils and multifunctional dispersant additives to help control deposits and reduce the effects of soot, dirt, and other contaminants.

Shell also reports improved wear performance compared with previous-generation API CJ-4 engine oils.

High and Low Temperature Performance

The full synthetic formulation is designed to perform across a broad range of operating temperatures.

At low temperatures, Rotella T6 5W-40 provides improved flow compared with conventional SAE 15W-40, helping the lubricant circulate during cold-weather startup.

At higher operating temperatures, the oil is formulated to resist heat-related breakdown while maintaining viscosity under mechanical shear.

The current Shell technical data sheet lists a typical pour point of -51°C (-60°F) and a flash point of 233°C (451°F).

Emissions System Compatibility

Rotella T6 5W-40 uses a low-ash formulation designed to help control blocking or poisoning of diesel exhaust aftertreatment devices, including systems used on modern low-emission vehicles.

This formulation helps support emissions-system performance while maintaining the protection required in heavy-duty diesel service.

Fuel Economy Performance

Shell reports that Rotella T6 5W-40 can provide up to 1.5% enhanced fuel economy capability compared with SAE 15W-40 heavy-duty engine oils, without compromising engine protection or durability.

Actual fuel economy varies with the vehicle, engine, duty cycle, operating conditions, maintenance, and other factors.

Applications

Shell Rotella T6 5W-40 is suitable for new and older diesel-powered vehicles, including:

• Class 8 tractor-trailers
• Heavy-duty diesel pickup trucks
• Delivery vehicles
• Utility fleets
• School bus fleets
• Other diesel engines requiring the supported SAE viscosity and performance specifications

Shell also identifies T6 5W-40 as a suitable replacement for mineral and synthetic SAE 15W-40 API CK-4 and CJ-4 oils in low-temperature applications. Always verify that SAE 5W-40 is permitted by the engine manufacturer before changing viscosity grades.

Specifications, Approvals and Recommendations

• API: CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4
• ACEA: E9, E11
• JASO: DH-2, MA, MA2
• Cummins: CES 20086, CES 20081
• DTFR: 15C100
• Mack: EOS-4.5
• Detroit Diesel: DFS 93K222, DFS 93K218
• Caterpillar: ECF-2, ECF-3
• MAN: M 3575
• Allison: TES-439
• Volvo: VDS-4.5
• Ford: WSS-M2C171-F1

Typical Physical Characteristics

These values are typical of current production and may vary within Shell's manufacturing specifications.

Frequently Asked Questions

Is Shell Rotella T6 5W-40 full synthetic?
Yes. Shell identifies Rotella T6 5W-40 as a fully synthetic heavy-duty diesel engine oil made with synthetic base oils and advanced additive technology.

Is Shell Rotella T6 5W-40 API CK-4?
Yes. API CK-4 is listed among the current specifications for Shell Rotella T6 5W-40. Shell also lists API CJ-4, CI-4 PLUS, CI-4, and CH-4.

What is Shell Rotella T6 5W-40 used for?
Rotella T6 5W-40 is designed for heavy-duty diesel applications including tractor-trailers, diesel pickups, delivery vehicles, utility fleets, and school buses when SAE 5W-40 and the appropriate performance specification are required.

Can Rotella T6 5W-40 replace 15W-40 diesel oil?
Shell states that T6 5W-40 is suitable as a replacement for mineral and synthetic SAE 15W-40 API CK-4 and CJ-4 oils in low-temperature applications. The engine manufacturer's approved viscosity grades should still be checked before switching.

Is Rotella T6 5W-40 good for cold weather?
Rotella T6 5W-40 is designed to provide improved low-temperature flow compared with conventional SAE 15W-40. The current Shell technical data sheet lists a typical pour point of -51°C (-60°F).

Is Rotella T6 5W-40 suitable for modern diesel emissions systems?
Yes. Shell uses a low-ash formulation designed to help protect exhaust catalysts, particulate filters, and other exhaust aftertreatment equipment found on modern low-emission diesel vehicles.

Does Shell Rotella T6 5W-40 meet Cummins CES 20086?
Yes. Shell lists Cummins CES 20086 and CES 20081 in the current product specifications.

Does Rotella T6 5W-40 meet Ford WSS-M2C171-F1?
Yes. Ford WSS-M2C171-F1 is listed on the current Shell technical data sheet.

Does Rotella T6 5W-40 meet Volvo VDS-4.5 and Mack EOS-4.5?
Yes. Shell lists both Volvo VDS-4.5 and Mack EOS-4.5 for Rotella T6 5W-40.

Is Shell Rotella T6 5W-40 JASO MA or MA2?
Shell lists both JASO MA and JASO MA2 among the product specifications. For motorcycle or wet-clutch applications, verify the required viscosity and lubricant specification in the motorcycle manufacturer's documentation before use.

How long does Shell Rotella T6 5W-40 last?
Shell's technical data sheet does not specify a universal mileage or hour-based drain interval. Oil-change intervals should follow the engine manufacturer's requirements and may be adjusted based on duty cycle, operating conditions, maintenance practices, and used oil analysis.

Does Rotella T6 5W-40 improve fuel economy?
Shell reports enhanced fuel economy capability of up to 1.5% compared with SAE 15W-40 heavy-duty engine oils. Actual results depend on the vehicle and operating conditions.