Purpose and Specifications

Castrol Magnatec 5W-40 C3 4L is a full synthetic engine oil that 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 up to 75% of engine wear during warm-up.

This premium oil meets key specs like ACEA C3, API SN, BMW LL-04, MB 229.31, RENAULT RN0700/RN0710, and FIAT 9.55535-S2. It's low-SAPS (Sulphated Ash, Phosphorus, Sulphur) formula protects diesel particulate filters (DPF) and catalysts, boosting fuel economy and emission control.

• Viscosity: SAE 5W-40 – flows easy at -30°C (6300 cP max for quick cold starts) and stays strong at high temps (13.6 cSt at 100°C)
• Volume: 4 liters, perfect for most cars and SUVs
• Temp range: Pour point -45°C for arctic cold, high-temp stability up to highway speeds
• Long drain: Supports extended intervals up to 15,000 km or 12 months

When to Use / Replace?

Use in gasoline and diesel engines needing ACEA C3 5W-40, especially modern cars with DPF, catalysts, or turbochargers from BMW, Mercedes, Renault, Fiat. Ideal for stop-start city driving, SUVs, or high-speed highways where quick warm-up protection matters.

Replace every 10,000-15,000 km or 12 months, whichever comes first – check your owner's manual. Shelf life is 5 years unopened in cool, dry storage.

FAQ

Can I use this in my diesel with DPF? Yes, its low-SAPS design keeps DPFs clean and efficient for longer life.

What's the cold start benefit? Flows at -30°C for easy starts down to -30°C, reducing wear by clinging to parts instantly.

Is it for petrol cars too? Absolutely, suits both petrol and diesel where ACEA C3 / API SN is recommended.