Taken from WW.Amsoil.com
Note the remark about temp for you guys up North



Both AMSOIL Synthetic Injector Oil and 100:1 Pre-mix Oil mix readily with fuel even in low temperatures. However, AMSOIL Injector Oil with its -45°F pour point and SAE #4 miscibility and fluidity rating, is better suited for severe cold. It is recommended for use in injector systems as well as 50:1 pre-mix. Also, AMSOIL injector oil will help ease starting because it does not solidify or get gummy in the motor which allows it to turn over more freely.