What is synthetic motor oil? AMSOIL Synthetic Lubricants are chemically designed to form pure lubricants. They do not contain contaminants or molecules that do not serve a purpose designed. Their versatility and their pure and uniform molecular structures provide properties that offer better friction reduction, optimum fuel efficiency, maximum film strength and extreme temperature performance that conventional lubricants simply can not touch.

On the other hand, conventional lubricants are refined from crude oil. Contaminants such as sulfur, nitrogen, oxygen and metal components such as nickel or vanadium are inherent in crude oil and can not be completely removed during the refining process. The oil refining process separates the different types of molecules in the oil by weight, leaving molecules of similar weight but different structure, which reduces performance.