The fuel mix you gave, 80% Methanol and 20% oil is often called FAI fuel and is used a lot I'm told in Europe. ANY mixture containing ANY nitro could be called Nitro fuel and it is therefore a very generic term.
A typical mix over here would be 65% methanol, 18% oil (castor or synthetic or combination), 15% nitro and 2% various additives such as anti-foamers, dyes, detergents, etc.

If the Nitro has been diluted before mixing that must be taken into account of course.