Fits select 1994-2026 AM General, Chevrolet, Dodge, Ford, Freightliner, Hummer, Nissan, and Ram heavy-duty diesel applications.

Royal Purple Duralec Ultra is a high-performance 10W-30 synthetic motor oil specifically engineered for high-output diesel engines. Formulated with proprietary Synerlec additive technology, this oil creates an exceptionally tough ionic bond with metal surfaces, providing up to 4X the film strength of leading competitors to prevent metal-to-metal contact during extreme loads.

This CK-4 rated oil is designed to reduce engine deposits and provide superior cold-flow operation for reliable start-up protection in rigorous on- and off-highway environments. It exceeds standard requirements to help reduce downtime and lower the total cost of ownership for heavy-duty fleets and personal trucks alike.

• Viscosity: 10W-30
• Service Class: API CK-4
• Volume: 1 Gallon
• Additive Technology: Proprietary Synerlec formula
• Wear Protection: Up to 33% better than CK-4 requirements
• Oil Life: Up to 40% better retention than CK-4 requirements
• Improved cold flow operation and start-up protection
• Reduced oil consumption in older generation engines

Fits select 2001-2026 Acura, Aston Martin, Chrysler, and Dodge vehicles.

Royal Purple HMX Premium Synthetic High Mileage motor oil is engineered with advanced Synerlec technology to provide exceptional film strength and friction reduction for aging engines. This high-performance lubricant creates an ionic attraction to internal metal components, maintaining a protective film on parts even when the engine is off to minimize critical start-up wear.

• Synerlec Additive Technology: Increases oil film toughness to reduce friction and mechanical heat for peak engine performance.
• Oxidation Resistance: Provides outstanding thermal stability to resist oil breakdown and safely extend drain intervals.
• Start-Up Protection: Ionic bond ensures a layer of oil remains on metal surfaces to prevent dry-start wear.
• Viscosity Grade: 5W-20
• Container Size: 1 Quart

Fits select 1989-2026 Acura, AM General, Aston Martin, Audi, and BMW vehicles.

Royal Purple High Performance 5W-30 motor oil is engineered to meet the extreme demands of modern gasoline direct injection (GDI) and turbocharged engines. As manufacturers shift toward smaller, high-output powerplants, the risk of low-speed pre-ignition (LSPI) and internal wear increases. This premium synthetic formula utilizes advanced additive chemistry to neutralize LSPI risks while maintaining critical film strength at high operating temperatures and loads.

The 6 gallon bag-in-box (BIB) packaging provides a high-volume solution for shops and enthusiasts, offering a more sustainable and space-efficient alternative to individual plastic quarts. The sealed bladder design prevents oil oxidation and ensures a clean, controlled pour for every service.

• LSPI Mitigation: Specifically formulated to prevent destructive low-speed pre-ignition events in GDI and turbocharged engines.
• Wear Protection: Enhanced additive technology forms a robust barrier to protect critical engine components like timing chains and valvetrains.
• Fuel Efficiency: Low-friction synthetic base stocks help optimize fuel economy without compromising engine longevity.
• Extreme Temperature Stability: 5W-30 multi-grade rating ensures rapid lubrication during cold starts and superior thermal resistance at high RPMs.
• Efficient Packaging: 6 gallon Bag-In-Box reduces plastic waste and simplifies storage and dispensing in professional environments.

Fits select 1994-2025 Aston Martin, BMW, Chrysler, Dodge, Freightliner, Infiniti, Jaguar, and Jeep models.

Royal Purple High Performance Euro Formula 0W-40 Synthetic Motor Oil is formulated with premium synthetic base stocks and advanced additive technology to meet the demanding requirements of European gasoline and light-duty diesel engines. This 6-gallon Bag-In-Box (BIB) packaging provides a high-volume, convenient solution for professional shops and enthusiasts, ensuring peak engine protection during severe operating conditions.

Engineered for superior oxidation stability and low volatility, this synthetic formula significantly reduces oil consumption between service intervals and provides excellent resistance to sludge and varnish deposits. It is recommended for turbocharged and direct injection engines, including those equipped with diesel particulate filters (DPF) and selective catalyst systems.

• Viscosity: 0W-40
• Container: 6 Gallon Bag-In-Box
• Cold-Start Performance: Superior low-temperature fluidity for rapid lubrication.
• Engine Protection: Advanced wear and corrosion protection for internal components.
• Fuel Efficiency: Optimized formulation to assist in maximizing MPG.
• System Compatibility: Safe for engines with turbochargers and diesel emissions equipment.

Fits select 1989-2026 Acura, AM General, Aston Martin, Audi, and BMW vehicles.

Modern gasoline direct injection (GDI) engines achieve high power density and fuel efficiency, but these downsized engines operate under extreme loads that can trigger low-speed pre-ignition (LSPI). Royal Purple High Performance synthetic motor oil is engineered with proprietary additive technology specifically formulated to combat LSPI and protect critical internal components from premature wear.

• Viscosity Grade: 5W-30
• Volume: 5 Quart jug
• Oil Type: Full synthetic high-performance multi-grade
• Protects against LSPI (low-speed pre-ignition) in GDI and turbocharged engines
• Optimized film strength for reduced metal-to-metal contact
• Improves fuel economy and maintains long-term engine reliability

Fits select 1997-2026 Acura, Aston Martin, Audi, and BMW vehicles requiring 5W-20 viscosity motor oil.

Royal Purple High Performance motor oil is engineered to meet the extreme demands of modern Gasoline Direct Injection (GDI) engines. While downsized engines achieve improved fuel economy, they operate under significantly higher loads, which can lead to accelerated wear and Low-Speed Pre-Ignition (LSPI). This premium synthetic multi-grade formula utilizes advanced additive technology to neutralize LSPI risks and maintain engine reliability under high-stress conditions.

• LSPI Protection: Specifically formulated to prevent the destructive phenomenon of low-speed pre-ignition in modern turbocharged and GDI engines.
• Superior Wear Control: High-strength film reduces friction and protects critical internal components from metal-to-metal contact.
• Enhanced Efficiency: Optimized viscosity profile improves fuel economy and thermal stability across wide temperature ranges.
• Premium Synthetic Base: Delivers long-term protection and maintains performance between service intervals.
• Specifications: 5W-20 viscosity; 5 Quart (4.73 Liter) container.

Fits select 2010-2026 Acura, Aston Martin, Buick, Cadillac, and Chevrolet vehicles.

Modern Gasoline Direct Injection (GDI) engines operate at significantly higher loads across all speeds to achieve superior power and efficiency. Royal Purple High Performance Multi-Grade Synthetic Motor Oil is engineered with state-of-the-art additive technology specifically to combat the unique challenges of these powerplants, including the destructive phenomenon of low-speed pre-ignition (LSPI).

• LSPI Mitigation: Specialized formulation helps prevent low-speed pre-ignition to protect pistons and connecting rods from catastrophic damage.
• Wear Reduction: Advanced synthetic chemistry provides a high-strength film to protect critical engine components under high-load conditions.
• Efficiency: Optimized 0W20 viscosity reduces internal friction to support improved fuel economy without sacrificing long-term protection.
• Thermal Stability: Resists oxidation and breakdown to maintain engine performance and reliability throughout the service interval.

Product Specifications:
Grade: 0W20
Type: Full Synthetic
Volume: 5 Quarts (4.73 Liters)
Product Line: High Performance Multi-Grade