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 results for a Bijur Pump, 50% larger than standard, using Amber 'A' oil.
| Identifier | ExFiles\Box 27\1\ Scan341 | |
| Date | 30th April 1930 | |
| Bijur Pump N.Sch 306A P.II. 50% LARGER THAN STANDARD. OIL:- AMBER "A" PRESSURE AT END OF STROKE (PEDAL ON DASH) 85 LB/□" QUANTITY DELIVERED / STROKE 27 CC's. LOST MOVEMENT AT END OF STROKE (PEDAL STOP TO DASH) .400" RESULTS SAME AS ABOVE WITH RESERVOIR 1/3 FULL. | ||