Superior protection against sludge

Castrol GTX 15W-40 A3/B3 is specially developed to protect your engine against the build-up of sludge, a thick, tar-like substance that can reduce your engine's performance. Thanks to its advanced formula, this oil offers up to 25% better protection against sludge compared to the industry standard.

Excellent thermal stability

This engine oil provides superior protection against thermal and viscosity breakdown, which is essential for maintaining optimal engine performance under various driving conditions.

Extends the life of your engine

With anti-wear additives, Castrol GTX 15W-40 A3/B3 helps extend the life of your engine by protecting critical parts from wear.

Suitable for various vehicles

This oil is suitable for both petrol and diesel engines and meets the following specifications:

• ACEA A3/B4
• API SP
• VW 501 01 / 505 00
• Fiat 9.55535-D2
• MB-Approval 229.1

Technical properties

• Density at 15°C : 0.870 g/ml
• Kinematic viscosity at 100°C : 14.6 mm²/s
• Viscosity index : 137
• Pour point : -36°C
• Flash point : 208°C

Available packaging

Castrol GTX 15W-40 A3/B3 is available in various packaging, including 1 liter, 4 liter, 5 liter, 60 liter, and 208 liter, so you can choose the right amount to suit your needs.