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).
Table comparing the specific gravity, distillation temperatures, and octane numbers of various fuel brands.
| Identifier | ExFiles\Box 27a\4\ Scan266 | |
| Date | 15th December 1933 guessed | |
| Continued. - 2 - Brand S.G @ 60°F 10% @ 35% @ 65% @ 90% @ Octane No Corys No. 1 .7292 59°C 96°C 130°C 167°C 62 Corys Com. .7329 62 99 135 169 63 Corys B.M .7372 62 92 124 162 66 Dominion .7315 65 95 6 120 160 63 Redline Super .7341 60 95 128 168 65 Redline Com. .7470 68 107 144 179 67 Bowrings Spirit .7351 58 100 144 185 63 Aero Special .7364 71 104 132 164 60 Blue Star Super .7321 66 97 126 157 62 G.O.P No.1 .7363 64 102 134 175 60 G.O.P.Com. .7387 65 102 136 178 63 Silkol Spirit .7401 78 102 127 154 61 | ||