Amco Igneus UHPX2 SAE 15W40 is a synthetic EC (Emission Compatible) Ultra High Performance Diesel Engine Oil meeting the requirements of API CK-4 performance level to help extend engine life while providing long drain capability. Delivers excellent low-temperature fluidity and pumpability for smooth starting in cold weather, combined with excellent soot and viscosity control. These properties enable greater engine efficiency, long engine life and long oil life.