21. Shrinking availability of avgas drives usage of small airplane engines that can use jet fuel. 22. By July 1945, the Japanese had stockpiled of avgas for the invasion of Japan. 23. Like most substances, jet fuels ( and avgas ) are denser at lower temperatures. 24. Care must be taken by small airplane pilots to select airports with avgas on flight planning. 25. For example, US and Japanese recreational pilots ship and depot avgas before flying into Siberia. 26. FBO services include full and self-serve 100LL Avgas and full service Jet A fuel. 27. AOPA online, the magazine of the AOPA, offers a position piece on avgas replacements. 28. Avgas and jet fuel are available.29. The airport provides Avgas and outhouses. 30. AvGas is 100 octane low-lead ( jet fuel is essentially diesel, though ).