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).
Comparing the lubricating properties of Castrol 'XL', Castrol 'R', and Amber Gear oils for a steering nut and worm.
| Identifier | WestWitteringFiles\Q\2-July1927-September1927\ 97 | |
| Date | 8th September 1927 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to HY.{Tom Haldenby - Plant Engineer} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} OY. ORIGINAL Hs{Lord Ernest Hives - Chair}/GWH{George W. Hancock - Head Chateauroux}1/LG8.9.27. X 8430 X 444 RE. LUBRICATION OF STEERING NUT AND WORM. We have tested Castrol 'XL' oil and find it to be equal for lubrication to Castrol 'R' and Amber Gear oil. We should place the oils in the following order of merit :- Castrol 'R'. Castrol 'XL'. Amber Gear oil 'A'. Prices 'B'. Hl. has tested Amber Gear oil and reports that it is 99% mineral. Hs{Lord Ernest Hives - Chair}/G.W.Hancock. | ||