Castrol EDGE Extended Performance 5W-30 Full Synthetic Motor Oil 5 qt — Extended 20,000‑mile protection, high thermal stability

Castrol EDGE Extended Performance 5W-30 is a hyper-premium full synthetic motor oil engineered to deliver maximum wear protection, thermal stability, and extended drain intervals up to 20,000 miles (or one year) in compatible engines.

Built from Castrol's strongest base stocks and proprietary additive chemistry, this 5W-30 formulation is designed to meet or exceed modern manufacturer and industry specifications including API, GM dexos1 Gen 3, ACEA, and Ford/Chrysler approvals. It targets high-stress conditions where oil strength, film durability, and oxidation resistance matter most, helping engines maintain performance over long service intervals.

How does this oil protect engines under high stress?

Castrol EDGE Extended Performance uses reinforced additives and robust base oils to form a durable lubricating film that resists breakdown at high temperatures and heavy loads. That stronger film reduces metal-to-metal contact and helps prevent wear and deposits in combustion-critical areas.

• 3X stronger against viscosity breakdown in standard lab tests
• 10X better high-stress performance in sequence IX assessments
• Enhanced anti-wear additives to protect bearings and cam lobes

What makes it suitable for long drain intervals?

This formulation is optimized for oxidation resistance and thermal stability, which slows oil degradation over time and mileage. In compatible vehicles and driving conditions, Castrol specifies extended drain capability of up to 20,000 miles or one year, helping reduce maintenance frequency while maintaining protection.

• High thermal stability to limit sludge and varnish formation
• Proprietary additives that maintain viscosity over extended use
• Tested to exceed API and OEM drain and durability requirements

Which vehicles and industry standards does it meet?

Castrol EDGE Extended Performance 5W-30 is formulated to satisfy a wide range of modern gasoline engines and the most demanding specifications. It carries approvals and meets test requirements from major OEMs and industry bodies to ensure compatibility and warranty compliance when those specs are listed by the vehicle manufacturer.

• Meets or exceeds API SQ/SP/SN PLUS/SN ILSAC GF-7
• Approved for GM dexos1 Gen 3 and applicable GM approvals
• Meets Ford WSS-M2C946-B1, WSS-M2C961-A1 and Chrysler MS 6395

How should I use this oil and what should I check before switching?

Use the 5W-30 viscosity grade when it matches your vehicle manufacturer’s recommended oil specification. Before adopting extended drain intervals, confirm your vehicle’s warranty rules and consult the owner's manual or dealer for any model-specific guidance.

• Follow manufacturer-recommended viscosity and service intervals
• Confirm OEM approvals listed in your vehicle manual for warranty compliance
• Check oil level and condition at regular intervals even with extended drains

Who is this for: Drivers and fleet managers seeking a high-performance synthetic motor oil for modern gasoline engines who want superior wear protection and the option of extended service intervals when permitted by the vehicle manufacturer. Ideal for owners who drive under high-load or long-distance conditions and who require an oil meeting strict OEM and industry approvals.