The Difference Between 100% Synthetic Oil and Full Synthetic Oil

Definition of "100% Synthetic" and "Fully Synthetic"

• Group I & Group II - Conventional Base Oils
• Group III, Group IV & Group V - Synthetic Base Oils

Is Group III Base Oil "Synthetic"?

What About Semi-Synthetic Motor Oil?

AMSOIL 100% Synthetic Motor Oil

An important point to remember: motor oil is not comprised of base oil alone.