ORIGINAL: fizzwater2
Wow, their comment on the fuel required says LOTS of castor oil... this is from the manual that the link was posted for. Does anyone make commercially available fuel with this much castor these days?
For this engine, use top quality methanol-based model
engine fuel containing approximately 25% castor-oil
and between 5% and 15% nitromethane.
Add more castor oil in fuel if you has too low castor oil percentage in the fuel.
Edit: corrected some wrong in text.