Purpose and Specifications

Castrol Magnatec 10W40 A/B 1L engine oil delivers non-stop protection from the first turn of the key. Its intelligent molecules cling like a magnet to critical engine parts such as the valvetrain, pistons, bearings, and timing chain, forming a strong barrier that slashes wear by up to 50% during cold starts and stop/start traffic.

This semi-synthetic premium oil flows easily in cold weather down to -25°C for quick protection on frosty mornings, while staying thick and reliable up to 150°C operating temperatures. It meets key specs like ACEA A3/B4, API SL/CF, VW 501.01/505.00, MB 229.1, and FIAT 9.55535-D2, making it perfect for petrol and diesel cars, vans, and older vehicles including VW, Mercedes, and Fiat models.

• 50% better wear protection vs. industry limits, especially in city driving with frequent restarts
• Guards against 75% of engine wear that happens during warm-up
• Ideal for high-mileage engines to cut oil consumption and extend life
• 1L size for top-ups or small engines

When to Use / Replace?

Use Castrol Magnatec 10W40 A/B in modern urban driving with lots of traffic stops, cold starts, or stop/start tech. It's great for pre-2005 Japanese, Korean, Australian, and American petrol/diesel vehicles, plus European brands needing these specs.

Replace every 10,000-15,000 km or 12 months, whichever comes first, based on typical manufacturer intervals for this viscosity. Check your owner's manual for exact needs. Shelf life is 4-5 years unopened in cool, dry storage.

FAQ

Is this oil good for cold winters? Yes, the 10W rating ensures smooth flow at low temps down to -25°C, protecting your engine instantly on startup.

Can I use it in diesel engines? Absolutely, it's approved for both petrol and diesel with ACEA B4 and VW 505.00 specs.

How does it help high-mileage cars? Its clinging technology reduces wear and oil burn in older engines, helping them run longer.