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).
Temperature test report for Chassis 35.FW with a Limousine body.
| Identifier | ExFiles\Box 38\2\ Scan101 | |
| Date | 7th June 1920 | |
| S.F.C. X-3456. CHASSIS 35.FW. 7.6.20. file EFC JUN 8 RECEIVED. Limousine Body. Engine revs. 1000. Standard engine - without Thermostat " Blanking Plates. " Bonnet. Temperature inside Body 21½°C. " outside " 17 °C. 50°C 2 mins 49.4 secs. 60°C 6 " 23 " 70°C 23 " 2 " 70½" 41 " 2 " Temp remaining at 70½° | ||