Jerry, did you mix the oil and alcohol first, then add the nitro? That's SOP for fuel mixin'. I'd suggest trying a teaspoon full of this oil and 4 tsp. of the alcohol and see if a good stirring would make it work. Not a lot to lose, anyway.
Awhile back, I looked at the Amzoil site and sent them an email, asking about an oil to mix with alcohol and nitro "for R/C", but the reply wasn't positive. Probably too small a market to suit them. However, our local Go-Kart shop has Klotz...and there's a BBQ place next door!

Steve