Powerful Engine Protection

Your bearings shoulder the burden whenever you tow, haul or stomp the gas. During operation, only a paper-thin oil film protects the bearings from rubbing against the crank journals and wearing out. AMSOIL delivers powerful protection for bearings and other critical components so you can drive with confidence. To demonstrate, an independent lab put AMSOIL Signature Series Synthetic Motor Oil head-to-head against a leading competitor in a 100,000-mile (160,000-km) test. AMSOIL provided far-superior wear protection and kept engine bearings looking like new. Give your vehicle the protection it needs with AMSOIL synthetic motor oil.