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).
Graph comparing the horsepower and fuel consumption of Petrol versus Pynol for a Goshawk engine.
| Identifier | ExFiles\Box 32\1\ Scan085 | |
| Date | 15th May 1923 | |
| FUEL TESTS. H.P. GIVEN BY PETROL & PYNOL RESPT GOSHAWK S.G. PETROL .752 S.G. PYNOL .804 BAROMETER - 740M.M. B.H.P. R.P.M. PETROL PYNOL CONSUMPTION PETROL & PYNOL COMPARED. MIXTURE ADJUSTED AT EACH SPEED TO WEAKEST MIXTURE FOR MAX POWER UNEVEN TORQUE BELOW THIS. PTS/HP/HR ACL 15-5-23 | ||