Castrol GTX is premium engine oil range that's been helping extend engine life since 1968. Its double-action formula clears sludge and stops sludge forming.
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 problems, like sludge, that your engine faces every day.
The Double Action formula of Castrol GTX cleans away old sludge* while protecting against new sludge formation, better than tough industry standards.