You are right as far as overall content is concerned.

Be aware that no combustive energy is derived from the oil content in a two stroke engine. All oil that goes into a two stroke engine comes out of the exhaust. It is there only for lubrication and the hot oil that is expelled from the exhaust carries with it heat from the combustion which means that the cooling fins have less work to do in keeping the engine cool.

The only combustive energy derived would be from the actual fuel, not the oil.

The lubricative oil does not burn.

Imagine a roll of newspaper rolled up and thrown in a fire. The fire would consume the paper as fuel.
Now take a similar amount of paper and wrap it around some rocks that will not burn. What will happen is that the paper will burn but the rocks will not. The rocks even though added to the fuel do not change the amount of energy that the paper will give to the fire. The rocks will only get hot.

Nitro is not a fuel but an additive that gives the fuel mixture more oxygen an important component to make the burn hotter and therefore gives more energy to the methanol.

Check around and see who burns 100% nitro.

Quote from Wikipedia:
" nitromethane is used as a fuel in racing, particularly drag racing, as well as for rockets and model airplanes and commonly referred to in this context as "nitro" or "top fuel". The oxygen content of nitromethane enables it to burn with much less atmospheric oxygen in comparison to hydrocarbons such as gasoline:

4CH3NO2 + 3O2 → 4CO2 + 6H2O + 2N2
14.6 kg of air is required to burn one kilogram of gasoline, but only 1.7 kg of air for one kilogram of nitromethane. Since an engine’s cylinder can only contain a limited amount of air on each stroke, 8.7 times more nitromethane than gasoline can be burned in one stroke. Nitromethane, however, has a lower energy density"

Robert