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).
Test requirements for vehicle heaters, demisters, and the cooling system.
| Identifier | ExFiles\Box 148\2\ scan0068 | |
| Date | 19th November 1938 guessed | |
| ⑦ Heaters or demisters - to operate satisfactorily for at least six months including winter months on at least three cars. ⑧ Cooling System General. @. Cooling system suitability - complete system to be tested out on Brooklands . or Montlhéry for Critical at temperature under max load max speed conditions & under max load low speed conditions; Check on their figures to be obtained in hot weather on Continental main roads & a mountain passes if possible. Traffic conditions suitability to be tested by at least three days running | ||