TM 9-2320 -209-10-1 Table 2-5. Tire Inflation Data Condition/Tire Size Pressure (psi) Highway 9 x 20 50 Highway 11 x 20 70 Cross-country 35 Mud, snow, and sand 15 Table 2-6. Permissible Fuels Ambient Temperature Fuel Primary Fuels No Limit Diesel fuel, VV-F-800, grade DF-A (NATO code no. F-54) Above -51° F Turbine fuel, MIL-T-5624, grade JP-5 (NATO code no. F-44) Above -10°F Diesel fuel, VV-F -800, grade DF-1 (NATO code no. F-54) Above +32 °F Diesel fuel, VV-F-800, grade DF-2 (NATO code no. F-54) Alternate Fuels Above -76°F Aviation gasoline, MIL-G-5572, AVGAS 80/87 (NATO code no. F-12) * Commercial aviation gasoline (ASTM D910), grade 80/87 * Commercial gasoline, leaded, low - lead, or unleaded, when research octane number (RON) is 89 or below, or octane number displayed on retail gasoline pumps in CONUS is 85 or below 2-24