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 illustrating the octane number blending characteristics of Isopropyl Ether and Iso-Octane by the Army Method of Test.
| Identifier | ExFiles\Box 150\1\ scan0227 | |
| Date | 15th October 1936 guessed | |
| FIG. 9. OCTANE No. BLENDING CHARACTERISTICS OF ISOPROPYL ETHER & ISO-OCTANE BY ARMY METHOD OF TEST. OCTANE + CC. PB ET4 PER GAL. +1.0 +0.5 100+0 ARMY OCTANE NUMBER 95 90 85 80 75 70 PERCENT BLENDING AGENT IN REFERENCE FUEL C-9. 0 10 20 30 40 50 60 WITH 3CC PB ET4 PER GAL. CLEAR. LEGEND. BLENDS OF ISOPROPYL ETHER ALONE BLENDS OF ISO-OCTANE ALONE BLENDS OF 50/50 MIXTURE OF ISOPROPYL ETHER & ISO-OCTANE DATA PRESENTED THRU COURTESY OF MAJ. S.D. HERON, ETHYL GASOLINE CORPORATION. | ||