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).
Fuel consumption and performance test report comparing Pyrol and Petrol fuels on car 49 GB.
| Identifier | ExFiles\Box 32\1\ Scan079 | |
| Date | 15th May 1923 | |
| X1555 ROLLS-ROYCE LTD. INSTRUCTIONS To: Mr Hives 15/5/ 1923 Order No. Customer's No. Consumption Test using Pyrol mixture & Petrol. Tests carried out on 49 GB Consumption Speed | Pyrol | Petrol 20 MPH | 18.2 M.P.G | 16.6 M.P.G 30 MPH | 16.2 | 15.8 M.P.G Building up Test - full throttle 10 MPH Pyrol is slightly worse at this speed than Petrol. At 5 MPH Pyrol is very bad will hardly run the car. With Petrol one or two miss fires. Tests 1/2 mile each before acceleration. Signed: A.F.H. This Sheet must be filed on completion of the work. | ||