Unleaded aviation fuel

A lead-free aviation gasoline composition having a high motor octane number and low freezing temperature, the gasoline comprising:

• (a) about forty-five percent (45%) to about sixty-five percent (65%) by weight of at least one unleaded gasoline base fuel having a motor octane number of between ninety-seven (97) and ninety-nine point nine (99.9);
• (b) about ten percent (10%) to about thirty-five percent (35%) by weight of one or more alkylated benzenes;
• (c) about six percent (6%) to about twelve percent (12%) by weight, collectively, of one or more of iso-pentane, n-butane, and iso-butane;
• and
• (d) about four percent (4%) to about fifteen percent (15%) by weight aromatic-amines, said aromatic amines comprising N-methyl-p-toluidine in combination with at least one of N-methyl-m-toluidine and m-Toluidine, and a ratio of N-methyl-p-toluidine to the at least one of N-methyl-m-toluidine and m-Toluidine is about four to one (4:1) to twelve to one (12:1);
• wherein the gasoline has a freezing point of −58° C. or lower.