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).
Recommended oils for the 3 1/2 litre Bentley.
| Identifier | ExFiles\Box 3\4\ 04-page380 | |
| Date | 4th July 1933 | |
| To Mx.{John H Maddocks - Chief Proving Officer} from Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}4/KT.4.7.33. OILS FOR 3 1/2 LITRE BENTLEY. We should use the same oils on this car as we use standard on P.II. and 20/25 HP. viz:- Engine - Motorine 'C' or Wakefields 'XL'. Gearbox - " " Steering Box - Amber 'A' or Wakefields 'XXL' Rear Axle - Whitmores Compound, or Wakefields GearEase. Bijur Tank - Amber 'A' or Wakefields 'XXL'. Prop. Shaft - " " Shock Dampers - Compressor Oil. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} | ||