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Customer complaints and analysis regarding excessive oil consumption in Bentley vehicles.


Identifier  ExFiles\Box 103\2\  scan0106
Date  31th August 1936
  
To Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer}

GWH {George W. Hancock - Head Chateauroux}

Bentley.

Excessive Oil Consumption and Over-oiling.

I have received your memo. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 15/KW.31.8.36.

Before writing my report on Bentleys I checked over the various complaints with Mr. Clark. Excessive oil consumption was not considered a complaint without 800 or 900 was considered excessive. There are several Owners who consider 900 MPG is not sufficient, both 3½ litre and the present 4¼ litre. I did not consider it as a complaint.

The history of last June's complaints at Kingsbury were 19 comprising.

9 rocker shaft wrong way.

6 valve packings renewed O.K.

1 Too much oil in sump.

3 Various trouble and made O.K. chiefly between 800 and 900 MPG.

In this quarter so far there have been 10 complaints.

2 800 MPG.

5 rocker shafts wrong way round.

1 valve packings renewed O.K.

1 900 MPG.

1 was proved to be O.K.

Therefore if you consider the 800 MPG as a complaint, modification to bores and ring will have to be made.

Would you ask Hd. {Mr Hayward / Mr Huddy} why Kingsbury invariably measure the bores of regrinds .001 larger than they state.

Hs {Lord Ernest Hives - Chair} /G.W.Hancock.
  
  
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).


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