See How AMSOIL Performs in the Harley-Davidson® Milwaukee-Eight® Engine

AMSOIL Harley

Watch how AMSOIL performs in this 2019 Harley with a Milwaukee-Eight 107 engine after 1,000 miles of extreme-heat testing on the dyno.



AMSOIL vs. Harley-Davidson Oil: How We Perform

AMSOIL vs. Harley Oil

We submitted AMSOIL synthetic motorcycle oil and Harley-Davidson SYN3 oil to independent testing. Who came out on top? Find out here.



Engine Detuning Kills Performance: Here’s What You Can Do

Motorcyle Octante Boost Ad MOB

Though many motorcycle owners don’t realize it, their bikes may be equipped with electronics that detect engine knock. When the computer adjusts ignition timing to eliminate knock, performance suffers.