Foos,

Nitro is generally the smallest number....in the range of 5% to maybe 25%, but typical sport fuel is 10 or 15. The next largest number is usually oil content, usually between 17% and 22%, but sometimes much lower for R/C car use. The balance is methanol and the percentage of that is not usually mentioned on the label. As has been stated, a minimum of 20% oil for that LA would be best, and if at least half of that is castor, it's even better.

Erik