Castrol GTX helps extend engine life for over 50 years. It has evolved to meet the needs of consumers and vehicle manufacturers since 1968 and continues to innovate and remain a trusted brand today.
Difficult driving conditions such as heavy traffic, poor fuel quality, poor driving conditions and longer intervals between oil changes can cause a thick, tar-like substance called sludge to build up.
Thick sludge can block your engine's critical oil passages, the same way cholesterol does, and if left untreated can reduce engine power and ultimately engine life.
Castrol GTX's dual-action formula removes thick sludge from the oil and protects against new sludge formation better than strict industry standards*.