Ok so i used to have this control line trainer plane long ago. Well, the plane is now gone and all I have left is this little .049 cox engine (the kind without the built-in fuel tank). So, I figure I should put it to good use and either rig it up to my Accipiter Badius plane, or, attatch it to my Nitro Evader.

Here is my question, I know the motor calls for 15-25% nitro and at least 18% castor oil. Back then, this synthetic stuff wasn't around. I am wondering if my Traxxax 20% top fuel that I use for my nitro stadium truck will work on this engine? It still needs to be broken in too.. so will the fuel be ok?

Also, how long do these engines last? I was told they practically last forever. Thx.