Manual says to run fuel that is at least part castor oil in the lubricant package, so that's what I do. Under the old distributer running the engine on 100% synthetic oil would void the warrantee. I've used both Omega and Wildcat 5% nitro fuels w/ good results. If the engine is new add a couple of ounces of castor oil to the fuel for added protection.

By the way, at my elevation (see level) anything above %5 nitro and the engine predetonates and overheats, so run it on 0% or 5% nitro.

Depending on the type of flying you're going to do, APC 16X10 and 17X8 also work.