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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).
Recommended decarbonizing mileage for chassis 19-RC.

Identifier  ExFiles\Box 18\3\  Scan098
Date  20th May 1930
  
[strikethrough]W/S[/strikethrough]
[strikethrough]Cx.{Major Len W. Cox - Advertising Manager}[/strikethrough]
c. Hs.{Lord Ernest Hives - Chair}

Y 7960

EP{G. Eric Platford - Chief Quality Engineer}/Thn4/H20.5.30.

re. Chassis 19-RC.{R. Childs}

With reference to your Cxl/KW19.5.30. (copy attached for Hs{Lord Ernest Hives - Chair}). as a matter of fact we recommend 8,000 to 10,000 miles as about the average mileage for decarbonising.

The probability is that the other car referred to by the customer is a lower compression engine.

We are sending a copy of your memo. to Hs.{Lord Ernest Hives - Chair} as he may have some comments to add with regard to the question of oil and air filters and the advantages or otherwise of these.

EP{G. Eric Platford - Chief Quality Engineer}/Thn.
  
  


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