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).
Protecting aluminium cylinder heads by adding bi-carbonate to the radiator water, following advice from Ford.
| Identifier | ExFiles\Box 27a\1\ Scan287 | |
| Date | 24th June 1935 | |
| Rolls-Royce Ltd. Derby........Rm.{William Robotham - Chief Engineer} +1745 Showrooms Sr/Dn24/MLG.24.6.35 We have been informed by Messrs. Kellner that in order to insure the protection of the aluminium cylinder heads of their engines, the Ford Motor Car Company advises adding to the water in radiator, 50 gr.{George Ratcliffe} of bi-carbonate. We trust that this will be of interest. Rm{William Robotham - Chief Engineer} (Signature) "Sr" Br (Signature) | ||