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).
Advantages of adding oil to petrol, especially for supercharged cars.
| Identifier | ExFiles\Box 27a\1\ Scan045 | |
| Date | 24th March 1932 | |
| Y 4013 To Hm.{Capt. W. Hallam - Head Repairs} (Paris). From Hs.{Lord Ernest Hives - Chair} Hs.{Lord Ernest Hives - Chair}1/MJ.24.3.32. Replying to Hm{Capt. W. Hallam - Head Repairs}/VA7/HM.{Capt. W. Hallam - Head Repairs}22.3.32. At intervals we have put before us the claims and advantages of adding oil to the petrol. On some cars fitted with superchargers, this is absolutely necessary, but on our cars we have never found any advantage. On the other hand, we do not think it would do any harm. Hs.{Lord Ernest Hives - Chair} | ||