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).
High oil consumption in the Phantom engine, attributing the issue to the fit of bearings and piston rings.

Identifier  ExFiles\Box 16\1\  Scan111
Date  28th July 1930 guessed
  
contd :- -7-

to 3 pts/min. at 2500 r.p.m. This engine was fitted with piston rings similar to Silver Ghost - not 'L' shaped rings.

Therefore in general we can say that high oil con-sumption on the Phantom is no mystery or peculiar to the design but depends upon the fit of the bearings and the piston rings.

Attached is a curve showing the oil flow at different speeds for 12-EX which has carefully fitted hand scraped bearings and is the car to be used for the next 10,000 miles test.


Hs{Lord Ernest Hives - Chair}/A.C.Lovesey.
  
  


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