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).
Letter from the Anglo-American Oil Company regarding the octane rating of Safe-T-Esso fuel.
| Identifier | ExFiles\Box 27a\4\ Scan130 | |
| Date | 30th May 1933 | |
| 81282. FORM No 220. Anglo-American Oil Company, Limited. 36, Queen Anne's Gate, Westminster. London, S.W.1. 30th May, 1933. TELEPHONE: VICTORIA 6325 (20 LINES) TELEGRAPHIC ADDRESS: ADOPTION-PARL-LONDON. PLEASE QUOTE Ref. DSP/CSV Your Ref: Hs.{Lord Ernest Hives - Chair}5/MJ.26/5/33. SUBJECT. Safe-T-Esso. Messrs. Rolls-Royce, Ltd., D E R B Y. Dear Sirs, For the attention of Mr. E.{Mr Elliott - Chief Engineer} W. Hives. Further to our letter of the 27th inst. on this matter, I have been in touch by cable with our friends in America and am informed that the Octane Number of Safe-T-Esso is 91½ on the Series 30 Engine at 300°F.{Mr Friese}, and according to the new method of rating with the C.F.R. Motor now adopted by the American Army Air Corps the rating is 88. According to the current Air Ministry method of doing this test the Octane Number would be substantially above 91½. Yours faithfully, ANGLO-AMERICAN OIL COMPANY, Ltd. Manager, Technical Department. | ||