A 15W-50 version of XP1, XP6 provides excellent high temperature shear stability and outstanding bearing oil film thickness in both Gasoline and Alcohol fueled engines. XP6 is designed for looser clearances and aluminum blocks. XP6 works well in both wet or dry sump engines, 410 sprint engines, Hydraulic lifter wet sump engines, Ford and Dodge Crate Engines, Off-Road Truck engines, and engines designed for SAE 50 weight oils. XP6 performs the best in engines operating with oil temperatures between 240F and 320F.
