Purpose and Specifications

Castrol GTX 5W-30 C4 1L engine oil delivers superior sludge protection to keep your petrol and diesel engine running clean and strong. Its Double Action formula removes old sludge buildup and prevents new formation from heat, pollutants, and short trips, helping extend engine life even under severe conditions.

This premium oil flows easily at cold starts down to -30°C for quick protection and stays thick up to 40°C ambient heat, resisting thermal breakdown. Approved for ACEA C4, MB 226.51, MB 229.31, and Renault RN0720, it's ideal for Mercedes-Benz and Renault vehicles requiring low-SAPS oil for modern emissions systems.

• Cleans engines 35% better than industry standards for longer performance
• Reduces oil consumption and wear with premium base oils
• Perfect for cars with extended service intervals up to 30,000 km or 12 months

When to Use / Replace?

Use Castrol GTX 5W-30 C4 in vehicles specifying ACEA C4 5W-30, especially diesels with DPF filters or under tough driving like city stops, highways, or hot climates. Replace every 10,000-15,000 km or 6-12 months for daily drivers; check your manual for exact intervals. Shelf life is 4-5 years unopened, stored cool and dry.

Great for high-mileage engines over 100,000 km to clean deposits and improve fuel economy by 2-3% versus thicker oils.

FAQ

Is this oil good for cold weather? Yes, the 5W rating ensures smooth flow at -30°C, protecting your engine on winter starts without excessive wear.

Does it suit modern diesel cars? Absolutely, ACEA C4 approval protects DPF and catalysts in Mercedes and Renault diesels.

How often should I change it? Every 10,000-15,000 km or yearly; its sludge-fighting power lets engines stay cleaner longer between changes.