ANY good two stroke oil will work, there is nothing different in our toy airplane engines from any other two stroke..
Contrary to the beliefs of some of our EXPERTS
Some work better than others over a VERY LONG period of time....
Amsoil in not one of them over a long period...
One of the very best is Sthil Ultra HP chain saw oil....Documented by T O M, (very tired old man), and getting grumpier all the time...