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).
Informational leaflet on 'Racing Shell' fuel for high-performance engines, detailing its properties, benefits, and retail price.
| Identifier | ExFiles\Box 20\4\ Scan049 | |
| Date | 17th February 1930 guessed | |
| Page 1: bered that there is a degree of ignition advance beyond which engine power falls off, even if detonation is entirely absent. For more exact information about “ mixing your own ” kindly write to Shell Mex Ltd., “Racing Shell” Technical Dept., Shell Corner, Kingsway, W.C. 2, giving make, type, date and individual details of your machine. RETAIL PRICES OF “RACING SHELL.”—Subject to Alteration. Two GALLON CANS. In London … … … 2/1¼ per gallon. „ Home Counties area… … … 2/3 „ „ Provinces … … … 2/3¼ „ May be ordered and obtained from all dealers and garages. Identify the new Can the “R” on top and the streaks of lightning on the sides. Every can of genuine “Racing Shell” is sealed. Derby 885 Page 2: Confidential. Racing SHELL To meet the insistent demand of the drivers of racing cars and motor cycles and other (sports) types with abnormally high compression or supercharged engines, Shell now introduces a new standard grade spirit—“ Racing Shell ”—in line with their constant lead in fuel research. For 97% of all cars and motor cycles, “ Shell ” petrol by itself is the ideal fuel in every respect—possessing as it does all good qualities and in particular an anti-knock value fully satisfactory to all normal cars. But there is now a certain number of “hotted-up” or supercharged sports and racing cars, and motor cycles, for which a specially designed fuel is needed if maximum performance is to be obtained. “ Racing Shell” is designed for this special need—it consists essentially of a concentration of those natural anti-knock hydrocarbons exclusive to, and a feature of, all petrols sold by Shell, and to which “ Shell ” petrols owe their famous anti-knocking qualities—properties vital to the smooth running and power performance of to-day’s high compression engines. Isolated and enhanced by special processes, these anti-knock hydrocarbons are selected and blended to a new Shell formula; the result—a triumph of industrial chemistry—is “Racing Shell.” “ Racing Shell” contains no dope or deleterious matter, and it cannot be duplicated by doped fuels or benzol mixtures. | ||