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 and price list for the Vigorec petrol additive.
| Identifier | ExFiles\Box 20\6\ Scan080 | |
| Date | 3rd June 1925 guessed | |
| TELEPHONE: REGENT 5931. TELEGRAMS: AUTOMETAL, PHONE, LONDON. CLARE HOUSE, 57, KINGSWAY, LONDON, W.C.2. E.{Mr Elliott - Chief Engineer} T. WHITE, SOLE DISTRIBUTOR FOR THE BRITISH ISLES. What is Vigorec ? VIGOREC is a liquid which, when added to petrol, allows of the whole of the calorific value of the spirit being employed to the best advantage. How does Vigorec act ? VIGOREC added to Petrol ensures complete combustion in the combustion chamber. It is a well-known fact that at present only part of the vaporized petrol in an engine develops power, the remainder is wasted passing away through the exhaust or left as carbon on the pistons, cylinder heads, valves, &c. VIGOREC prevents this waste, and owing to the complete combustion of the gases in the combustion chamber no carbon (which is unconsumed petrol) remains, and the whole of the petrol is employed in developing power. VIGOREC in thus rendering the vaporized petrol carbonless, prevents the necessity for de-carbonization. What are the advantages of Vigorec ? VIGOREC mixed with the quantity of petrol ordinarily employed means more power. VIGOREC allows of less petrol being used than that ordinarily consumed for a given power, hence an economy of 10 to 30 per cent. VIGOREC gives smoother running. VIGOREC gives better acceleration. VIGOREC means less Gear changing. VIGOREC not only prevents carbonization, but acts as a de-carbonizer in the case of an engine already carbonized. A car using Vigorec need never be laid up for de-carbonization. If your engine is full of carbon before using Vigorec run for two or three hundred miles with Vigorec and you will never use petrol again unless Vigorec is added to it. How to use Vigorec. VIGOREC is added to petrol in the proportion of approximately one gallon of Vigorec to five hundred gallons of petrol; or say one No. 3 tin of Vigorec to a medium sized petrol tank. For every two-and-a-half gallons of petrol used add the amount of Vigorec contained in the internal tube attached inside the screwed cap of the tin. The Manufacturers of Vigorec and leading authorities certify that it has no harmful effect on metals of any kind, or on lubricating oil. N.B.—By using Vigorec your mixture becomes richer. It will be possible to use more air, or the same effect can be obtained by reducing the main jet. Should the engine start misfiring it is a sure sign that you are running on too rich a mixture. PRICES. Enough for treating 150 gallons petrol ... No. 1 size ... 15/- per tin. " " " 32 " " ... No. 2 size ... 4/- " " " " " 8 " " ... No. 3 size ... 1/3 " " | ||