A standard 3,000-mile oil change gets you coast to coast.
The AMSOIL 25,000-mile oil change takes you around around the world.
When AMSOIL applied jet age lubricant technology to automobile engines in 1972 the
rules changed. AMSOIL synthetic motor oil was in a different class. It expanded
the boundaries of lubricant performance and delivered value that motorists had never
realized before. To this day, only AMSOIL premium synthetic motor oils come with
a 25,000-mile/one-year* oil change interval guarantee. Accept no substitutes. AMSOIL
is the first in extended drain motor oil.