Rolls-Royce Archives
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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).
Testing super-Shell lubricating oil, detailing its efficiency and effect on engine noise.

Identifier  ExFiles\Box 32\4\  Scan216
Date  24th October 1925
  
W/S.
To H.{Arthur M. Hanbury - Head Complaints} from Hs{Lord Ernest Hives - Chair}

X1588

Hs{Lord Ernest Hives - Chair}2/LG24.10.25.

H2/TB/20.10.25. We have tested super-Shell Lubricating oil. It is a very thin oil and for that reason is better for efficiency.

We would not like to recommend it as standard because it does accentuate engine noises. A considerable amount of noise is damped down by oil viscosity. We have no reason to doubt however, that the car will function perfectly satisfactory with this oil.


Hs.{Lord Ernest Hives - Chair}
  
  


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