Castrol GTX 15W-40, A3/B3 is a mineral-based engine oil developed to counteract challenging conditions such as sludge, high temperature, and friction, which can shorten the life of an engine. The Dual Action cleaning technology helps keep the engine running cleaner, more organized, and longer-lasting by cleaning up existing sludge deposits inside the engine while simultaneously preventing new sludge from forming.

Formulated with the high thermal loads that turbocharged and multi-valve engines face in mind, Castrol GTX 15W-40 offers up to 50% more wear protection. With API SL/CF performance levels, it can be safely used in both gasoline and suitable diesel passenger vehicles.

Key Features and Benefits

• Provides up to 50% more wear protection at high and low temperatures.

• Dual action cleaning against sludge: Resolves old sludge and prevents new formation.

• Resistant mineral formula against oxidation and viscosity loss.

• Safe to use in turbocharged and multi-valve engines.

• Compatible with catalytic converters.

• Reliable performance even under challenging driving, high heat, and low-quality fuel conditions.

Application Areas

• Gasoline vehicles

• Diesel passenger cars requiring API CF grade oil

• Turbocharged and multi-valve engines

• Vehicles conforming to A3/B3 specifications

Performance Level

• API SL/CF

Long Engine Life with Castrol Assurance

One of the world's most established oil producers, Castrol develops effective solutions against sludge issues experienced in modern and traditional engines. The GTX series focuses on protecting the engine during daily city use, long distances, and hot-cold weather conditions.

Unopened products can be safely stored for up to 5 years in dry environments away from sunlight.