Methylated spirits is denatured ethanol alcohol. Methylated spirits contain 5 or 10% methanol to render the ethanol non-drinkable (and dangerous to your eyesight!). It is generally NOT suitable as an alcohol source for model engines. These model engines run very well on METHANOL (wood grain alcohol), oil and with or without nitromethane. After the Oklahoma City bombing of the federal building, and in many countries, nitromethane is more difficult to impossible to purchase as an individual. In some countries, it is actually illegal to possess nitromethane. I am fortunate enough to have 54-gallon barrels of highly purified methanol, 30-gallon and 5 gallon barrels and pails of nitromethane, LOTS of AA castor oil and Benol racing castor and many oils up to and including jet turbine oil for my extreme rpm trials. With hazmat fees running through the roof, it is just expensive to even have fuel sent to your home or commercial address any more. Overseas, you can get Castrol M, but unless you need barrels or a tanker full, it is extremely difficult to buy it in the U.S. The old fuel mixing dinosaur.