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 of oil consumption for E.A.C V Series engines with different pistons, calculated on power at full load.
| Identifier | Morton\M3.1\ img003 | |
| Date | 31th March 1928 | |
| OIL CONSUMPTION E.A.C V SERIES CALCULATED ON POWER AT FULL LOAD. PTS/HP/HOUR. .03 .02 .01 R.P.M. 2000 2500 2750 OLD TYPE PISTONS. LATEST PISTONS. OLD TYPE PISTONS WITH L SECTN RINGS. 31-3-28 | ||