Product Description

Castrol EDGE Professional A3 0W-40 is a full synthetic premium automotive engine oil designed for high-performance petrol and diesel passenger cars, turbocharged and naturally aspirated engines, and vehicles requiring SAE 0W-40 viscosity with ACEA A3/B4 and relevant European OEM specifications. Key applications include high-performance European passenger cars, demanding highway driving, high-temperature operation, and engines requiring strong wear protection and high oil-film strength. The product is formulated as an automotive crankcase lubricant and is intended for applications where the vehicle manufacturer specifies the applicable viscosity and performance requirements.

Castrol EDGE Professional A3 0W-40 uses Fluid TITANIUM Technology to provide strong resistance to oil-film breakdown under high pressure and demanding operating conditions. The 0W-40 viscosity provides good low-temperature fluidity while maintaining a relatively high operating-temperature viscosity for engines requiring SAE 40 protection.

Product Type

• Full Synthetic Engine Oil
• Premium Passenger Car Motor Oil
• SAE 0W-40
• Petrol & Diesel Engine Oil
• High-Performance Engine Lubricant
• European Vehicle Engine Oil

Specifications & Approvals

Performance Specifications

• SAE 0W-40
• ACEA A3/B4
• API SN/CF

OEM Approvals / Requirements

The exact approval and recommendation list should be checked against the latest Castrol PDS for the specific market and product code before publication, as EDGE Professional products can have market-specific formulations and approval lists. Castrol's Australian PDS database confirms a dedicated Australian listing for EDGE Professional A3 0W-40.

Typical Properties

For the Australian product, I recommend using only values confirmed by the current Castrol PDS rather than transferring figures from the retail EDGE 0W-40 A3/B4, because the Professional A3 0W-40 is a distinct product.

The Australian SDS confirms that the product is Castrol EDGE Professional A3 0W-40, product code 467337, and identifies its intended use as an automotive engine crankcase lubricant.

Key Benefits

High-Temperature Protection

• Excellent protection under high engine temperatures
• Strong oil-film strength
• Helps resist thermal and oxidative degradation
• Suitable for demanding driving conditions

Wear Protection

• Helps protect critical engine components against wear
• Maintains a strong lubricating film under high loads
• Supports long-term engine durability

Cold-Start Performance

• SAE 0W rating provides excellent low-temperature fluidity
• Rapid oil circulation during cold starts
• Helps reduce start-up wear

Engine Cleanliness

• Helps control sludge and deposits
• Supports clean pistons and internal engine components
• Maintains lubricant performance during extended operation

Applications

• European passenger cars
• Petrol engines
• Diesel engines
• Turbocharged engines
• Naturally aspirated engines
• High-performance vehicles
• High-speed highway driving
• High-temperature operating conditions
• Vehicles requiring SAE 0W-40
• Applications requiring ACEA A3/B4

Always follow the vehicle manufacturer's specified viscosity, ACEA/API category and OEM approval.

Storage

Store in the original sealed container in a clean, dry area away from excessive heat, direct sunlight and moisture. Keep the container tightly closed when not in use. Avoid contamination with water, fuel, dirt or other lubricants.

Health & Safety

The Australian SDS classifies Castrol EDGE Professional A3 0W-40 as not classified under the Australian GHS criteria and indicates no signal word or hazard statement for the unused product. Repeated or prolonged contact can nevertheless defat the skin. Used engine oil may contain hazardous contaminants and should be handled appropriately.

Refer to the latest Castrol SDS before handling or disposal.