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).
Performance comparison table for a Standard Phantom III component versus a Run Baken oil-filled component.
| Identifier | ExFiles\Box 164\5\ img408 | |
| Date | 20th February 1939 guessed | |
| Standard P.III. 102°C. Good performance. 7 secs. Run Baken oil filled. Bad misfires. | ||