Purpose and Specifications

Castrol Magnatec Stop-Start 5W-30 C3 5L is a premium fully synthetic engine oil designed for modern gasoline and diesel engines with stop-start technology. Its intelligent molecules cling like a magnet to key parts such as the valvetrain, timing chain, pistons, and bearings, forming a self-healing protective layer that activates instantly every time you start your engine.

This oil excels in city driving where you might stop and start up to 18,000 times a year, reducing microscopic wear from idling in traffic or at junctions. It delivers up to 50% less warm-up and stop-start wear compared to industry limits, while keeping your engine clean and supporting fuel efficiency in congested conditions. Approved for leading brands including Mercedes-Benz (MB 229.51), Volkswagen (VW 502.00/505.00/505.01), BMW (LL-04), and GM (Dexos 2), it's ideal for vehicles with DPF and emissions systems thanks to its low-ash formula that prevents clogging.

Practical perks include smooth flow at cold starts down to -30°C for quick protection, and reliable thickness up to 150°C under heavy loads, ensuring consistent performance year-round.

When to Use / Replace?

Use this oil in cars requiring ACEA C3 or API SN 5W-30 specs, especially for frequent short trips, urban commuting, or stop-start systems. It's perfect for European vehicles from VW, BMW, Mercedes, and others listed in your owner's manual.

• Replace every 10,000-15,000 km or 12 months for normal driving to maintain peak protection and cleanliness.
• Short trips or stop-start: Change every 7,500-10,000 km or 6-9 months to combat extra wear.
• Shelf life: Up to 5 years unopened in cool, dry storage.

FAQ

Is Castrol Magnatec Stop-Start 5W-30 C3 suitable for my diesel with DPF?
Yes, its low-ash formula meets ACEA C3 and protects emissions systems without clogging, approved for VW, BMW, and Mercedes diesels.

Does it really reduce wear in traffic?
Absolutely - tested to cut stop-start wear significantly, with molecules that cling and protect from the first turn of the key, even after 18,000 starts yearly.

What's the operating temperature range?
Flows easily at -30°C for winter starts and stays strong up to 150°C for hot summers or heavy towing.