rdb127: Not sure which engine you are running.. but just an FYI incase.. Scott is not a supporter of the Amsoil 100:1 on the Brillelli engines. He is a firm supported of Penzoil 50:1 and the Opti 2 he sells on his site which Comes out to about 70:1 located here...
http://www.brillelli.com/brillelli_004.htm