Why AMSOIL? | The introduction of the world's first synthetic motor oil to meet American Petroleum Institute service requirements in 1972 set all-new standards for motor oil quality. AMSOIL synthetic motor oil outperformed conventional petroleum motor oils on all counts. It was clear from the start that this innovative product would play a major role in engine performance and engine life. AMSOIL has not relented in its drive to maximize vehicle performance and prolong vehicle life. The company’s quality first commitment has resulted in a full line of sophisticated synthetic formulations engineered to withstand the punishment imposed by modified equipment. AMSOIL synthetic lubricants can help your vehicle reach its full power potential.