Castrol GTX ULTRACLEAN - with its proprietary sludge buster - is our cleanest GTX ever. Its unique Double Action formula cleans away old sludge** and protects against new sludge formation, giving you more control over today's challenging conditions.Help extend the life of your engine with GTX ULTRAC...

Castrol GTX ULTRACLEAN - with its proprietary sludge buster - is our cleanest GTX ever. Its unique Double Action formula cleans away old sludge** and protects against new sludge formation, giving you more control over today's challenging conditions. Help extend the life of your engine with GTX ULTRA...