Purpose and Specifications

Castrol Magnatec 5W-40 C3 1L engine oil delivers instant protection from the moment you turn the key. Its intelligent molecules cling like a magnet to critical engine parts, forming an extra layer that cuts wear by up to 50% during cold starts when engines are most vulnerable.

This fully synthetic oil flows easily in cold temps down to -30°C for quick startup protection, while staying thick at high operating temps up to 150°C to shield pistons, bearings, and valvetrain. Perfect for gasoline and diesel engines, including those with diesel particulate filters, it meets ACEA C3 specs for modern vehicles from BMW, Mercedes, and VW.

• Non-stop protection in city stop-start, highways, or extreme conditions
• Reduces wear on startup, where up to 75% of engine damage occurs
• 1L size ideal for top-ups or small engines

When to Use / Replace?

Use Castrol Magnatec 5W-40 C3 if your owner's manual calls for 5W-40 ACEA C3 oil. It's great for daily drives, heavy loads, or cold climates. Replace every 10,000-15,000 km or 12 months, whichever comes first, to keep protection strong. Shelf life is 5 years unopened in cool, dry storage.

FAQ

Does it work in my diesel car with DPF?
Yes, its low-ash C3 formula protects diesel particulate filters while clinging to parts for better wear resistance.

Is 5W-40 better for hot weather?
Absolutely, it holds up thicker at high temps (over 100°C) than thinner oils, preventing breakdowns under heat and load.

How much wear does it really reduce?
Up to 50% better startup protection versus industry standards, keeping your engine quieter and longer-lasting.