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).
Reporting on a 10,000-mile test using Wakefield's Special Helmore Oil in car GLN-60.
| Identifier | ExFiles\Box 145\2\ scan0016 | |
| Date | 6th March 1933 | |
| X16583 S/W. To Hs.{Lord Ernest Hives - Chair} from Lp.{Mr Lappin} Copy to Wor.{Arthur Wormald - General Works Manager} Lp.{Mr Lappin}11/LAM.6.3.33. Re: GLN-60. The unit in the above car has now completed over 10,000 miles since fitted, running exclusively on Wakefield's Special Helmore Oil. There is one quart only left out of the five-gallon drum. Lp.{Mr Lappin} [STAMP] RECEIVED | ||