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 oil consumption versus R.P.M. for an E.A.C. Engine V Series at 3/4 full load, testing different piston and ring configurations.
| Identifier | Morton\M3.1\ img002 | |
| Date | 31th March 1925 | |
| E.A.C. ENGINE V SERIES OIL CONSUMPTION AT 3/4 FULL LOAD 31/3/25 OIL CONSUMPTION PTS PER HOUR 4 3 2 1 0 R.P.M. 2000 2250 2500 2750 OLD TYPE STD. PISTONS WITH STD. RINGS & SCRAPER LATEST PISTONS (PISTONS E.73407) & STD. RINGS (RINGS E.73287-90) OLD TYPE PISTONS WITH 'L' SECTION RINGS PISTONS E.73273 RINGS E.73287-91 | ||