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 Alexander Duckham & Co. providing testimonials on the performance of Duckham's Tablets fuel additive.
| Identifier | ExFiles\Box 27\2\ Scan416 | |
| Date | 23th January 1936 | |
| COPY OF LETTER RECEIVED FROM MESSRS. ALEXANDER DUCKHAM & CO. LIMITED. ECB/CWR. The Service Manager, Messrs. Rolls Royce, Ltd., DERBY. 23rd. January, 1936. Dear Sir, Following our usual practice of keeping all those who come into contact with our products informed of latest developments, we give below a few recent testimonials which will speak for themselves. It may also interest you to know that although a comparatively new product sales of Duckham's Tablets have already passed the two million mark. 1. Transport Manager of well-known firm of London Flour Millers, reports result of three months test:- Prior to the use of Tablets, petrol consumption 11.99 m.p.g. After three months trial of Tablets, petrol " 13.17 " This represents a saving of 10% in petrol consumption, giving a cost analysis, as follows ;- Value of petrol saved £.10. 16. 8. Cost of Tablets £. 3. 7. 6. Net saving after paying for Tablets. £. 7. 9. 2. per vehicle per annum. 2. A firm of Leicester Printers: Normal mileage between de-carbonisation has been roughly 6,000 miles. Since using Tablets engines have reached over 9,000 miles and consider it safe to add a further 2,000 to this figure. When examined the valves were found to be entirely free of carbon and the small amount of carbon on the pistons was soft, powdery, and very easy to remove. 3. A Commercial User writes: "I think the following two cases may interest you. The first was an Austin light van, and after using your Tablets the m.p.g. was increased by about 15%. The second trial was with a 30-cwt. Chevrolet van, and an increase of 17% was shown after Tablets had been added." Yours faithfully, For ALEXANDER DUCKHAM & CO. LTD. (Signed) E.C. Brown. Asst. Manager, Motor Oil Sales. ENCLOSURE No 823 "JUNTA" | ||