The Castrol GTX range of engine oils help extend engine life by cleaning away harmful sludge, and protecting against new sludge formation.
Castrol GTX is one of the world's most trusted engine oils, helping to extend the life of engines since it was first introduced in 1968.
It's more than just oil. It's liquid engineering that protects against problems, like sludge, that 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's double action formula cleans away old sludge and protects against new sludge formation better than tough industry standards* demand.
Castrol GTX Ultraclean's superior performance provides up to 50% better sludge protection compared to tough industry standards** - no other oil keeps engines cleaner.
Help extend your engine's life by choosing the right oil for your vehicle from the Castrol GTX range.