Purpose and Specifications

Castrol GTX 10W-40 A3/B4 1L engine oil delivers trusted protection for gasoline and diesel engines, fighting sludge from heat, dirt, and short trips to help your engine last longer.

This premium oil flows easily in cold starts down to -25°C and stays strong up to 200°C, cutting wear by creating a tough barrier. Its 3X-Clean formula keeps engines 35% cleaner than standard oils, reducing oil burn and leaks while meeting ACEA A3/B4, API SL/CF, VW 501.01/505.00, MB 229.1, and Fiat 9.55535-D2 specs.

• 50% better sludge protection for cleaner oil ways
• Handles high-heat deposits without breaking down
• Lowers consumption and smoke for smoother runs
• Perfect for cars needing 10W-40 viscosity

When to Use / Replace?

Use in modern cars, vans, and light trucks under tough conditions like city stop-go or hot weather. Ideal for VW, Mercedes, Fiat, and Renault engines matching its approvals.

Replace every 10,000-15,000 km or 12 months, or sooner if towing or in dusty areas. Shelf life is 5 years stored under 60°C away from sun and freeze.

FAQ

Is this oil good for high-mileage engines? Yes, its anti-wear additives protect engines over 100,000 km by cleaning sludge and preventing new buildup.

Can I use it in cold winters? Absolutely, the 10W rating ensures smooth starts at -25°C without thickening.

Does it work in diesel cars? Yes, ACEA B4 and VW 505.00 approvals make it suitable for turbo diesels too.