Castrol EDGE 25W-50 with Fluid TITANIUM is a race bred oil specially formulated for modified engines, push-rod technology, street machines, big bore competition engines, naturally aspirated, supercharged or turbocharged.Castrol EDGE 25W-50 has demonstrated superior protection in certain highly loaded valve-train components and delivers optimal cam-wear protection for radical cam profiles. APPLICATION:Castrol EDGE 25W-50 provides outstanding wear protection in big bore street machines and competition engines. It is suitable for use where the manufacturer recommends an API SG/CD or earlier specification 25W-50 lubricant.Also suitable for use in large in-board power and ski boats, veteran motorcycles and motor cars where high viscocity oils are specificied or required.Castrol EDGE 25W-50 is approved for use in vehicles from leading manufacturers, please refer to the product performance section and your owners handbook.