From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph showing lead requirements of aviation gasoline blends to achieve 100 Army Octane number.
| Identifier | ExFiles\Box 150\1\ scan0226 | |
| Date | 30th January 1936 guessed | |
| FIG. 8. LEAD REQUIREMENTS OF AVIATION GASOLINE BLENDS FOR 100 ARMY OCTANE NO. CC PB ET4 PER GAL. REQUIRED FOR 100 ARMY OCTANE NO. PER CENT BLENDING AGENT IN 74 OCTANE NO. AVIATION FUEL. ISOPROPYL ETHER BLENDS ISO OCTANE BLENDS | ||