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.
We submitted AMSOIL synthetic motorcycle oil and Harley-Davidson SYN3 oil to independent testing. Who came out on top? Find out here.
Engine detuning to prevent knocking can lead to rough idle and poor throttle response. Here’s an easy solution to motorcycle engine knocking.