I'm not sure how much background someone reading this may have so I'm gonna go over it kinda thoroughly. In a turbocharged engine, when the turbo compresses air into the intake piping, it heats up and becomes less dense. If the air isn't dense, you can't put as much fuel in so you get less power. When fuel is sprayed, it evaporates and cools the intake charge so even more fuel can be put in. Another important thing is the octane rating of the fuel. (resistance to detonation when it's compressed in the cylinder. The higher the octane, the more it can be compressed and so the more efficiently it will burn) A cooler air/fuel mixture will increase the effective octane rating of the fuel. 2,2,4-Trimethylpentane is used as a the standard for octane rating with it being 100. Heptane is the other standard with an octane of 0. The less surface rating a chemical has the high its octane rating is (Toluene, Benzene, etc) Now you can make more power generally with something like ethanol because more fuel is required per unit of air, so more of a cooling effect. It also has an octane of something like 120. Methanol is even better because of the same reasons (it's octane is 129, which is really high). Sometimes water is injected to further cooler the intake charge. With that being said, what are some good choices of chemicals for fuels? (assuming price isn't an issue.) Possibly Methanediol? It may be to stable based on the stability of ethylene glycol. And I'm asking for a point of view from a chemist.