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 various oils under parking and joggles conditions for two worm types.
| Identifier | ExFiles\Box 67\4\ scan0378 | |
| Date | 3rd October 1927 guessed | |
| COMPARISON OF OILS. .720 WORM .940 WORM OIL. PARKING. JOGGLES- PARKING. JOGGLES. Quick Slow Quick Slow Quick Slow Quick Slow AVERAGE OF: ④ AVERAGE OF: ③ MOTORINEC. .0830 .1081 .0313 .1138 ② .0638 .1123 .0531 .1213 ② CASTOR. .0396 .1020 .0286 .1170 ② .0610 .1183 .0528 .1172 ① 150-VIS. .0688 .1180 .0890 >.1272 ① .0679 .1269 .0688 .1331 ① P.4. .0478 .1287 .0137 .1160 ① .0682 .1128 .0492 .1160 LARO. .0443 .0990 .0388 .1104 ① MOBILE E.{Mr Elliott - Chief Engineer} .0367 .1977 .0388 >.1272 ① SPERM. .0778 .1266 .0913 >.1272 ① AMBER "A". .0889 .1081 .0431 >.1272 ① MOTORINE B. .0411 .0925 .0178 .0945 | ||