Part of the National Synthetics Educational Series –
What is synthetic motor oil? AMSOIL synthetic lubricants are chemically engineered to form pure lubricants. They contain no contaminants or molecules that don’t serve a designed purpose. Their versatility and pure, uniform molecular structures impart properties that provide better friction-reduction, optimum fuel efficiency, maximum film strength and extreme-temperature performance conventional lubricants just can’t touch.
Conventional lubricants, on the other hand, are refined from crude oil. Contaminating elements such as sulfur, nitrogen, oxygen and metal components such as nickel or vanadium are inherent to crude oil and cannot be completely removed through the refining process. The oil refining process separates the various types of molecules in the oil by weight, leaving molecules similar in weight but dissimilar in structure, reducing performance.
AMSOIL Signature Series Synthetic Motor Oil outperformed nine leading synthetic oils in the Four-Ball Wear Test.
AMSOIL Signature Series Synthetic Motor Oil keeps your engine 5x cleaner than conventional oil can.
Find out how AMSOIL synthetic lubricants save you money by maximizing fuel economy and reducing oil consumption.
See what happens when we push a Harley-Davidson* to more than 500°F.
What happens to motor oil when the temperature plummets to -40°F? See how AMSOIL Signature Series Synthetic Motor Oil performs.