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).
Heavy oil consumption on the 20/25 HP model during testing.
| Identifier | ExFiles\Box 144\3\ scan0056 | |
| Date | 22th June 1936 | |
| x1220 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}10/KW.22.6.36. 21-G-IV - Oil Consumption on the 20/25 HP. We have bumped into heavy oil consumption on 20/25's on test. Wor.{Arthur Wormald - General Works Manager} is using GAE-20, which has the only up-to-date 20/25 unit in it. Will you therefore please fit C-16 to 21-G-IV so that we can carry on with our tests on this car. The Test Dept. more or less overhauled the unit which was in GUB-5, so it is doubtful if C-16 will be required for this car. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||