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).
Laboratory report comparing the composition of Castraulic and D.W.S. brake fluids.
| Identifier | ExFiles\Box 140\2\ scan0078 | |
| Date | 17th December 1937 | |
| Rm{William Robotham - Chief Engineer}/Fosken Herewith copy of Test report on brake oil. Rm{William Robotham - Chief Engineer}/F.D. H1/EA.7/JN.17.12.37. 1166 Laboratory Report No. L.4522. Tach File Re SAMPLES OF CASTRAULIC BRAKE FLUID AND D.W.S. BRAKE FLUID. The results of examination of the above are given below :- CASTRAULIC BRAKE FLUID (Sampled 24.4.36.) Impure Ethyl Alcohol 48% Pure Castor Oil 52% D.W.S. BRAKE FLUID (Sampled 10.10.36.) Impure Ethyl Alcohol 40% Pure Castor Oil 60% H1/E.A. | ||