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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 analyzing oil consumption in relation to oil flow through bearings, with comparative data for Silver Ghost and Phantom cars.

Identifier  ExFiles\Box 16\1\  Scan106
Date  4th May 1926 guessed
  
contd :- -2-
consumed will be influenced by the amount supplied to the walls. The following curve supports this supposition and shews how the consumption of this particular Silver Ghost increases with an increase of the aggregate oil flow through the bearings. The oil flow was regulated by means of the pressure.
The effect of discharge upon consumption is more easily appreciated by reference to some results of road tests made on both a Phantom and a Silver Ghost. These curves shew how the miles per gallon decrease as the oil flow increases.
It will be observed that the consumption on this base is nearly the same for each car. The small difference which does exist is in
contd :-

Graph 1 Title: SILVER GHOST OIL CONSUMPTION AT 2000 RPM FOR VARYING OIL FLOWS THRO' BEARINGS
Graph 1 Y-Axis: CONSUMPTION PTS/HR
Graph 1 X-Axis: OIL DISCHARGE THROUGH BEARINGS PTS/MIN

Graph 2 Title: OIL CONSUMPTION & FLOW THRO' BEARINGS
Graph 2 Legend: --- CAR S.G. SILVER GHOST -- CAR K.E. PHANTOM
Graph 2 Y-Axis: CONSUMPTION - MILES/GALL
Graph 2 X-Axis: OIL DISCHARGE PTS PER MIN
  
  


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