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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).
Report comparing petrol from British Petroleum Co. with Shell No.1 spirit, noting lower power and increased engine 'pinking'.

Identifier  ExFiles\Box 30\5\  Scan005
Date  13th December 1920
  
X1356

To Wd.{Mr Wood/Mr Whitehead} from Hs{Lord Ernest Hives - Chair}/TMW.

Hs{Lord Ernest Hives - Chair}/TMW2/LG13.12.20.

X.1356. RE PETROL SUPPLIED BY THE BRITISH PETROLEUM CO.

In reply to your Wd{Mr Wood/Mr Whitehead}/GEA8/AG26.11.20, We attach herewith our Chemists report on this petrol for your examination.

We have also tested it in comparison with Shell No.1 spirit for power and running in the car. We found the power averaged .5% less than Shell, and running in the car there is a distinct tendency to increase "pinking" From a running point of view we do not consider this spirit any better than Mex.

Hs{Lord Ernest Hives - Chair}/TMW.
  
  


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