digginfool i have been running 101 octane. Im not sure about the additives but i dont see why it would hurt anything. Ive also just been running castor people say theres plus and minus to either but ive never seen it and never ran synthetic in anything. Ive raced my daughter races and we have a drag car never had anything with synthetic in it

 

we're using 92 pump gas and running main jet alittle fat and the needle lean,dont want it loading up waiting, running mix at 38 to 1 , im old school on oil it worked when i was a kid and still works good now[img]i/expressions/face-icon-small-happy.gif[/img] I'll let you all know when we make the grab bars they will be trick for sure my neighor is a dam good machinist .