How long have AMSOIL products been available?
In 1972, AMSOIL introduced the first synthetic motor oil with an API (American
Petroleum Institute) Service Classification. Since that time,
AMSOIL has added many premium products to its original oils, and distributes them
through a highly efficient dealer-to-customer network. Learn more at
AMSOIL, An American Success Story.
What is the Four Ball Wear Test?
The Four Ball Wear Test puts one rotating ball against three fixed balls under
specific conditions of pressure, temperature, revolutions per minute and duration.
he test may be used to evaluate the friction- and wear-control ability of liquid
lubricants or greases in sliding contact. The Four Ball Wear Test is a good laboratory
tool for developing oils with good engine wear control.
The results appearing on the AMSOIL Series 2000 20W-50 Racing Oil (TRO), Series 2000
0W-30 Motor Oil (TSO), and Series 3000 5W-30 Heavy Duty Diesel Oil (HDD) were from
testing done by a well known independent lab. Such a facility would not jeopardize
its reputation by misrepresenting test results.
AMSOIL ran literally thousands of tests in our own lab before we sent the product
for testing. The independent lab's results correlate very well with our own.
Will I see an increase in gas mileage with AMSOIL?
AMSOIL Motor Oils reduce friction and drag better than petroleum oils and other
synthetic oils, resulting in significant mileage increases. In a
recent 1.2 million mile demonstration, AMSOIL showed a 4.5%
increase in gas mileage. Other tests have shown greater increases under certain
weather and driving conditions. Every vehicle is different, as are driving habits
and conditions, and it is difficult to predict an actual increase.