Signature Series 5W-50 Synthetic Motor Oil Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards. • 75% more engine protection against horsepower loss and wear. • 50% more cleaning power vs. AMSOIL OE Motor Oil • Protects turbochargers 72% better than required by the GM dexos1 Gen 2 specification. • Trusted by professional engine builders • Guaranteed protection for up to 25,000