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).
Tests concerning the quantity of oil in the crank chamber.
| Identifier | ExFiles\Box 16\1\ Scan011 | |
| Date | 1st January 1907 | |
| X740 1400 Quantity of oil in crank chamber 1907 - Mob. Shat. Tested on 60545. Up to overflow 7? pints. see other card pressure constant at from 5 to 15 lbs. varies 2 lbs only. high & low speed. Reduced. quantity 3 minm & 4 max ferti oil. Pressure dropped. engine running on 60553 - new engine with .012 liners in all bearings filled to overflow. took 7 pints To refill after running 1 1/2 pints. drained out when stopped 2 1/2 pints. } found water leak liners taken out difference of oil level stopped & running (over) | ||