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).
Temperature test results for water, oil, and air under various vehicle operating conditions.
| Identifier | ExFiles\Box 11\3\ 03-page209 | |
| Date | 18th July 1930 guessed | |
| -2- 5° Test with front bonnet shutters open, 70 M.P.H. Top water temp. Bottom water temp. Oil temp. Air temp. 87.5 80 90 19 85 76 90 18.5 80 71 90 18.5 } Note result of rain storm. 79.5 72.5 88 18.5 82.5 76.5 89 18 85 78.5 89 18 87 80 90 18 87.5 80.5 90 18 87.5 80 90 18 6° Test with front and rear bonnet shutters open, 60 M.P.H. Top water temp. Bottom water temp. Oil temp. Air temp. 81 75 78 17.75 81 75 79 18 80.75 75 80 17.75 7° Test with front and rear bonnet shutters open, 70 M.P.H. Top water temp. Bottom water temp. Oil temp. Air temp. 87.5 80 87.5 18.25 87.5 80 89 18.5 87 80 90 18.5 8° Ignition retarded 8 notches, 70 M.P.H. temp. test. Top water temp. Bottom water temp. Oil temp. Air temp. 89.5 82.5 91.5 18.5 90 82.5 92 18.75 90 83 92 18.75 | ||