Since its market launch in 1968, Castrol GTX has been one of the world's most successful motor oils and reliably contributes to extending engine life.

It's more than just oil. It's liquid engineering - a lubricating technology that protects your engine from common problems like sludge build-up.

​​​​​​​​​​Severe operating conditions can result in the formation of a viscous, tarry substance known as sludge. Like cholesterol, sludge can clog your engine's vital oil lines. If left unchecked, engine performance may be affected and ultimately engine life may be shortened.

Castrol GTX's Double Action formula dissolves old sludge while protecting against new sludge build-up, exceeding demanding industry standards*.

Castrol GTX Ultraclean offers up to 50% more protection against sludge formation than required by industry standards** - no other oil keeps engines cleaner.

Make your engine last longer by choosing the right oil from the Castrol GTX range.

* Compared to API SN Seq. VG mud tests
** 50% less deposits than required by API SN industry standard / measurement with Seq. VG mud test