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).
Use of 'Miracle Oil' as a petrol additive for Sir Emsley Carr's Chassis No. 3-PG.
| Identifier | ExFiles\Box 32\4\ Scan141 | |
| Date | 4th September 1923 | |
| X1588 To KJF. from Hs.{Lord Ernest Hives - Chair} Hsl/LG4.9.23. Sir Emsley Carr - Chassis No.3-PG. Referring to your KJP1/H31.8.23. We have never made specific tests with Miracle Oil because we have never felt it has been worth the trouble. We appreciate that the above customer may have noticed the certain advantages mentioned when adding Miracle Oil to the petrol. From our experience, however, he would obtain the same advantages if he used ordinary engine oil instead of 'Miracle'. Engine oil would be approx. one-eighth the cost. We have never discouraged the use of Miracle Oil because we realise adding oil with the petrol has certain advantages. Hs.{Lord Ernest Hives - Chair} | ||