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).
Page 2 of a letter from Price's Lubricants Limited discussing oil specifications such as S.A.E. and 'Vis'.
| Identifier | ExFiles\Box 144\1\ scan0290 | |
| Date | 31th March 1938 guessed | |
| PRICE'S LUBRICANTS LIMITED. -2- with Motorine E and Motorine M.{Mr Moon / Mr Moore} If in your books you said S.A.E. and we said "Vis" the owner of a Rolls would be puzzled to know which was correct. What we say equally applies, of course, to our competitors, and we feel sure you will find there is agreement between us that you should adopt "Vis." instead of S.A.E. although as far as the numbers are concerned, there is no difference. We take it that any question as to an S.A.E.40 does not arise. At the moment speaking for ourselves and several of the Oil Companies we have oils which conform to S.A.E.40, but in respect of which we do not put the numbering 40 into any of our literature. We are, Yours truly, PRICE'S LUBRICANTS LIMITED. M E Brooker TECHNICAL DIRECTOR. | ||