Castrol GTX is one of the world's most trusted engine oils. It's more than just oil. It's liquid engineering that protects against the problems your engine faces every day. Castrol GTX is one of the world's most trusted engine oils. It's more than just oil. It's liquid engineering that protects against the problems your engine faces every day. Severe driving conditions can cause the build-up of a thick, tar-like substance called sludge. Sludge can block your engine's vital oilways like cholesterol – and if untreated it can rob an engine of power and, ultimately, its life. Castrol GTX Double Action formula cleans away old sludge*, and protects against new sludge formation better than tough industry standards Help extend the life of your engine with Castrol GTX.  

• Provides superior protection against engine sludge
• Advanced protection against viscosity and thermal breakdown
• Premium quality base oils and anti-wear additives to help extend the life of your engine
• Helps minimise oil consumption

• ACEA C4
• Renault RN 0720
• MB-Approval 226.51