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).
And comparing different lubricating oils and suppliers for car and aero engines.
| Identifier | ExFiles\Box 76\4\ scan0167 | |
| Date | 22th August 1919 | |
| To EH. from R.{Sir Henry Royce} c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to Wd.{Mr Wood/Mr Whitehead} X.1434 - RE LUBRICATING OILS. It is my impression that satisfactory lubricating oils are sent out by Prices, providing they know what you want, but many of those which we have used in the past have been too heavy. In the old days we used to deal with the Dee Oil Co. of Chester for works lubricating oils, who made us up a compound oil to our specification. In this oil they supplied a particularly good mineral base. Of recent years, as you will know, one has used much oil from Wakefields. These people seem to have been very clever in modifying the ordinary castor oil to minimise the usual disadvantage of pure castor oil. Providing that they keep to their standard quality of about 90% of pure castor oil, I think this lubricanh is to be preferred to all others, for car and aero engines. Lastly there is the Vacuum Oil Company's productions, which are so well marketed, but I have always considered these to consist of pure mineral oils and not a combination of mineral oils with other suitable oils of known organic origin, as I understand is the standard practice with the Price people. In conclusion, I should, if I were keeping a garage, stock - (1) Wakefields' Castrol. (2) Prices' Motorine. (3) Vacuum Oils. so as to meet the demand of any customer, and recommend them to Contd. | ||