Castrol GTX ULTRACLEAN’s synthetic technology has superior performance. Its unique Double Action formula cleans away old sludge, and protects against new sludge formation, giving you more control over today´s challenging conditions.APPLICATION Castrol GTX ULTRACLEAN 10W-30 is suitable for use in automotive petrol engines where the manufacturer recommends an API SN, ILSAC GF-5 or earlier specification 10W-30 lubricant.
