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).
List of favourable engine features and a note regarding the 30.HP type filler cap.
| Identifier | ExFiles\Box 83\3\ scan0037 | |
| Date | 14th March 1937 guessed | |
| ( 2 ) Sr.remarked favourably on the following features:- a) Engine particularly sweet - better than those he gets. Free from over-run booms which he reports on Standard Bentleys. b) Rapid warming up from cold with thermostat control of water flow a very good feature and of great value. This also enables the car heater to be used almost at once which is useful. ----------------- Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/LMW. Note! This engine has the 30.HP. type filler with bayonet cap. | ||