Historical US Aviation Gasoline (Avgas) Specifications
Military and Commercial Specifications
| 91/98 Av Gas (mil) | 100/130 Av Gas (mil) | 108/135 AvGas (mil) | 115/145 Av Gas | ||
| Color | Blue | Blue | Brown | Purple | |
| Obsolete | Obsolete | Obsolete | Obsolete | ||
| Composition | Suphur (wt %) MAX | .05 | .05 | .05 | .05 |
| Tetraethyl Lead max ml per gal | 2.0 | 3.0 | 3.0 | 4.6 | |
| Volatility | Dist 10% MIN | 158 F | 158 F | 158 F | 158 F |
| Dist 50% MAX | 221 F | 221 F | 221 F | 221 F | |
| Dist 90% MIN | 212 F | 212 F | 212 F | 212 F | |
| Dist 90% MAX | 257 F | 257 F | 257 F | 257 F | |
| End Point MAX | 338 F | 338 F | 338 F | 338 F | |
| Sun of 10% & 50% | 307 F | 307 F | 307 F | 307 F | |
| Residue (vol%) | 1.5 | 1.5 | |||
| Dist Recovery (vol%) MIN | 97 | 97 | 97 | 97 | |
| Reid Vapor Press | 7.0 | 7.0 | 7.0 | 7.0 | |
| Fluidity | Freeze Point | - 76F | - 76F | - 76F | - 76F |
| Combustion | Net Heat of Comb BTU/lb | 18700 | 18700 | 18800 | 18800 |
| Knock Rating, Lean | 91 | 100 | 108 | 115 | |
| Knock Rating Rich | 98 | 130 | 135 | 145 | |
| Stability | Potential Gum MAX | 6.0 | 6.0 | ||
| Precipitate MAX | 2.0 | 2.0 | |||
| Contaminants | Existent Gum MAX | 3.0 | 3.0 |
Last Update 11/09/01