This sure isn't an answer..

Why do people add Castor oil to their fuel? I've got a EVO .46, and an Irvine .53 I run plain old Omega 10% pink stuff. Is the adding Castor just for 4 cycles? The cheezy Omega stuff I run has some type of oil in it already right? At what point should someone think about adding Castor to their fuel? - Joe