ORIGINAL: Chikokishi

I was reading though the 1/2A fuel post and i saw mention of using regular gasoline. Is it possible to use regular gasoline, or regular diesel, mixed with a bit of caster oil, in a little cox engine? Im not going for spectacular performance.. its only going onto a foam plane for control line flight. We do not have a hobby shop in this area at all, so stuff like nitro is out of the question. I can probably get kerosene at Walmart, and Castor oil there also.

Thanks!
Chiko