TRIAX Synergy DXR 0W-40 is an ultra-premium full synthetic engine oil specifically designed for high-performance GM engines requiring the dexos R specification. Formulated with advanced friction modifiers and thermally stable synthetic base oils, DXR delivers outstanding protection under extreme conditions—on the street or the track. This oil provides maximum film strength at high temperatures, superior shear stability, and rapid cold start flow to safeguard powerful V8 engines like the LT1, LT4, and other supercharged or naturally aspirated GM performance platforms.