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).
Confirming an order of Castrol XXL oil for experimental work on a 4 1/4 litre Bentley.
| Identifier | ExFiles\Box 145\2\ scan0095 | |
| Date | 14th February 1936 | |
| To Roy.{Sir Henry Royce} X1231 Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation}4/KW.14.2.36. This is to confirm that you will order 1. 10-gallon drum of Castrol XXL for experimental work on 4¼ litre Bentley. We have obtained 2 gallons of Castrol XXL from Messrs. Sanderson & Holmes, to start our test. Hs{Lord Ernest Hives - Chair}/C.T.Salt. | ||