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).
Running log detailing test runs with different grades of oil.
| Identifier | ExFiles\Box 145\1\ scan0130 | |
| Date | 29th May 1933 | |
| TABLE 1. RUNNING LOG. | Date | Weather | Miles Run | | Running time in Minutes. | | Approx. oil pressure (lbs/Sq.in) at 35 m.p.h. at half distance. | Grade of petrol burned. | Speed on open road (m.p.h.) | Grade of Oil. | |----------|-------------------------|-----------|---------|--------------------------|---------|-----------------------------------------------------------------------|-------------------------|-----------------------------|---------------| | | | Out | In | Out | In | | | | | | 29.5.33. | Fine. hot, slight breeze. | 25.3 | 25.4 | 61 | 55 | 40 | Shell No.1. | 35 | Mobiloil A.{Mr Adams} | | 30.5.33. | " | 25.3 | 25.3 | 55 | 60 | 40 | " | 35 | Mobiloil AF. | | 31.5.33. | " | 25.35 | 25.4 | 53 | 61 | 44 | " | 35 | Mobiloil BB. | | 1.6.33. | " | 25.3 | 25.25 | 58 | 59 | 47 | " | 35 | Mobiloil D.{John DeLooze - Company Secretary} | | ||