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).
Record of the car's complete weight and the engine oil used.
| Identifier | ExFiles\Box 5a\4\ 04-page238 | |
| Date | 27th February 1935 | |
| -11- HS{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}10/KW, 27.2.35. Weight of car complete with petrol, oil, water and accessories :- Tons cwts. qrs. lbs. 1 18 1 25 Oil used for first 10,000 miles in engine - Castrol Tonic XL; For the latter mileage - Wakefield's CW oil. HM{Capt. W. Hallam - Head Repairs}/G.W. Hancock. | ||