Purpose and Specifications

Castrol Magnatec 5W-30 A3/B4 4L engine oil delivers instant protection from the moment you start your car. Its unique intelligent molecules cling like a magnet to key engine parts such as the valvetrain, pistons, bearings, and timing chain, forming a strong protective layer that locks in place.

This fully synthetic premium oil reduces engine wear during critical warm-up and stop-start driving by up to 50%, perfect for modern gasoline and diesel engines in daily traffic where you might stop and start up to 18,000 times a year. The 5W-30 viscosity flows easily at cold starts down to -30°C for quick lubrication in winter, while staying thick enough for high temperatures over 100°C in summer heat or heavy loads.

Approved for top brands including Mercedes-Benz (MB 226.5, 229.5, 229.3), Volkswagen (502.00/505.00), and Renault (RN0700/RN0710), it meets ACEA A3/B4 and API SL standards for long-lasting performance.

When to Use / Replace?

Use Castrol Magnatec 5W-30 A3/B4 in cars with frequent short trips, city driving, or stop-start traffic. Ideal for vehicles from VW, Mercedes, Renault, and others specifying these approvals. Replace every 10,000-15,000 km or 12 months, whichever comes first, to maintain peak protection and avoid sludge buildup. Shelf life is up to 5 years when stored cool and dry.

• Flows fast at -30°C for reliable winter starts
• Handles over 100°C operating temps without thinning
• Cuts startup wear by 50% for longer engine life

Frequently Asked Questions

Is this oil good for my VW or Mercedes? Yes, it's fully approved for VW 502.00/505.00 and MB 229.5 specs, ensuring compatibility and warranty-safe performance.

How often should I change it? Change every 10,000-15,000 km or yearly to keep the clinging protection strong and prevent wear.

Does it work in cold weather? Absolutely, the 5W rating pumps instantly at -30°C, protecting your engine from the first turn of the key.